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Recent questions and answers in Classification of Elements and Periodicity in Properties
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JEEMAIN and NEET
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Chemistry
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Classification of Elements and Periodicity in Properties
In an element (X) shows two oxidation states $+2$ and $+3$ and forms an oxide in such a way the ratio of the element showing $+2$ and $+2$ states is $1:3$ in compound the formulae of
jeemain
cbse
chemistry
class11
unit3
classification-of-elements-and-periodicity-of-properties
difficult
answered
Jun 20, 2020
by
kshitijthareja03
1
answer
The bond angle of $H_2 Se$ is best described as being
jeemain
chemistry
classification-of-elements-and-periodicity-of-properties
answered
Jan 18, 2016
by
meena.p
1
answer
If $\varepsilon_{C-C}=348kJmol^{-1},\varepsilon_{C-H}=412kJ mol^{-1}$ and $\varepsilon_{H-H}=436KJ mol^{-1}$,the pauling electronegativity of C is about (Given : electronegativity of H =2.1)
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
medium
answered
Jul 28, 2014
by
sreemathi.v
1
answer
According to Pauling,the electronegativity difference between two atoms A and B is directly proportional to (where $\varepsilon$ represents bond enthalpy)
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
The correct order of Pauling electronegativity values for Li,Na and K is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
The Pauling electronegativity for H is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Which of the following statements regarding electropositive nature of elements in a period is correct?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Which of the following elements is most electropositive?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Which of the following elements never has an oxidation state +1?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
In the periodic table,electronegativity of elements
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
With the increase in atomic number in a period
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Which of the following elements is expected to have maximum value of Pauling electronegativity?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
The Pauling electronegativity value of fluorine is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
The correct order of Pauling electronegativity is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
The electronegativity of the following elements increases in the order
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
electronegativity
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Electron affinities of Li,Na and K follow the order
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
electron-affinity
electron-gain-enthalpy
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Electron affinities of Be,B and Al follow the order
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
electron-affinity
electron-gain-enthalpy
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Electron affinities of C,Si and Ge follow the order
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
electron-affinity
electron-gain-enthalpy
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Which of the following will have the lowest value of electron affinity?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
electron-affinity
electron-gain-enthalpy
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Which of the following elements has the highest value of electron affinity?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
electron-affinity
electron-gain-enthalpy
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
Which of the following elements has zero electron affinity?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
electron-affinity
electron-gain-enthalpy
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
The correct order of electron affinity is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
electron-affinity
electron-gain-enthalpy
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
The element with atomic number 105 is known as
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
easy
answered
Jul 28, 2014
by
sreemathi.v
1
answer
The elements $_{30}Zn,_{48}Cd$ and $_{80}Hg$ belong to
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The atomic number of In is 49.It belongs to
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
An element X belongs to Group 16 and $5^{th}$ period.Its atomic number is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The atomic numbers of elements of the lanthanide series lie in the range of
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The total number of elements in Groups 8 to 10 of the periodic table is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The atomic numbers of elements of the second inner transition elements lie in the range of
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
An element X belongs to Group 14 and $2^{nd}$ period of the periodic table.Its atomic number will be
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The number of elements in the fourth period of the periodic table is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The atomic number of element next to $_{53}I$ in the same group is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The elements with atomic numbers 21 to 30 belong to
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
medium
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The number of periods in the long form of periodic table is
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
easy
answered
Jul 25, 2014
by
sreemathi.v
1
answer
In Lother Meyer plot of atomic volume versus atomic mass,the peaks are occupied by
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
easy
answered
Jul 25, 2014
by
sreemathi.v
1
answer
In the sixth period,the orbitals being filled are
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
easy
answered
Jul 25, 2014
by
sreemathi.v
1
answer
The fifth period of modern periodic table includes
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
classification-of-elements
easy
answered
Jul 25, 2014
by
sreemathi.v
1
answer
Calculate the electronegativity of Flourine, given the following: $E_{H-H} = 104.2 \; kcal\;mol^{-1},\; E_{F-F} = 36.6\; kcal\;mol^{-1},\;E_{H-F} = 134.6 \; kcal\;mol^{-1},\;\chi_H = 2.1$
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
inorganic-chemistry
electronegativity
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
Which of the following sets of bonds are correctly ordered from least to most polar?
cl51199
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
inorganic-chemistry
electronegativity
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
Which of the following compounds is the most polar: H$_2$O (l), H$_2$S (g), HF (l), HCl (g) ?
cl51199
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
inorganic-chemistry
electronegativity
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
Four elements P, Q, R and S belong to groups 13, 15, 16, and 17, but not in that order. The electronegativity values of four elements in the same period of the periodic table are listed below:
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
inorganic-chemistry
electronegativity
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
How much energy in kJ is released when 7.1 g of Chlorine are completely converted to Cl$^{-}$ ions in the gaseous state?
cl51149
jeemain
chemistry
classification-of-elements-and-periodicity-of-properties
ch3
periodicity
electron-gain-enthalpy
inorganic-chemistry
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
How much energy in kJ is released when 3.55g of Chlorine are completely converted to Cl$^{-}$ ions in the gaseous state?
jeemain
chemistry
classification-of-elements-and-periodicity-of-properties
ch3
periodicity
electron-gain-enthalpy
inorganic-chemistry
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
The first ionization potentials of Na, Mg, Al and Si in order is best represented as?
cl51145
cl51143
jeemain
chemistry
classification-of-elements-and-periodicity-of-properties
ch3
periodicity
ionization-enthalphy
inorganic-chemistry
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
The first ionization potentials of Na, Mg, Al and Si in order is best represented as?
cl51143
jeemain
chemistry
classification-of-elements-and-periodicity-of-properties
ch3
periodicity
ionization-enthalphy
inorganic-chemistry
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
The first ionization potentials in electron volts of nitrogen and oxygen are respectively given by?
jeemain
chemistry
classification-of-elements-and-periodicity-of-properties
ch3
periodicity
ionization-enthalphy
inorganic-chemistry
medium
answered
Jul 24, 2014
by
balaji.thirumalai
1
answer
The radii of F, O, F$^{-}$ and O$^{2-}$ follows which of the following orders:
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
atomic-radius
medium
answered
Jul 23, 2014
by
balaji.thirumalai
1
answer
The ionic radius of Na$^{+}$ ion is 0.95 and the inter-nuclear distance between ion pairs in the NaCl crystal is 2.76. What is the radius of the Cl$^{-}$ ion?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
atomic-radius
medium
answered
Jul 23, 2014
by
balaji.thirumalai
1
answer
Which of the following statements are incorrect?
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
atomic-radius
medium
answered
Jul 23, 2014
by
balaji.thirumalai
1
answer
Rank the following sets of atoms and ions in order of increasing size: S, S$^{2-}$, Cl
cl51133
cl51111
cl51109
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
periodicity
atomic-radius
easy
answered
Jul 23, 2014
by
balaji.thirumalai
1
answer
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