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Recent questions tagged general-properties

Which of the following is true about the oxidation state of transition metals?

asked Aug 4, 2014 by balaji.thirumalai

1 answer

Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect?

asked Jul 30, 2014 by balaji.thirumalai

1 answer

Platinum, palladium, iridium etc., are called noble metals because

asked Jan 31, 2014 by sreemathi.v

1 answer

In acidic medium one mole of $MnO_4^-$ accepts how many moles of electrons in a redox process ?

asked Jan 30, 2014 by sreemathi.v

1 answer

The property exhibited by only transitional elements

asked Jan 30, 2014 by sreemathi.v

1 answer

In first transition series, the melting point of Mn is low because

asked Jan 30, 2014 by sreemathi.v

1 answer

Vanadium (III) oxide is a strong

asked Jan 30, 2014 by sreemathi.v

1 answer

In which of the following will the ionic radii of chromium be the smallest

asked Jan 30, 2014 by sreemathi.v

1 answer

Match the following catalysts to the transition metal used.

asked Jan 30, 2014 by sreemathi.v

1 answer

Formation of interstitial compounds makes the transition metal more:

asked Jan 30, 2014 by sreemathi.v

1 answer

Match the following, where EAN stands for Effective Atomic Number, the number of electrons on the central metal ion, including ligands in the bonding:

asked Jan 30, 2014 by sreemathi.v

1 answer

Which of the following statements about magnetic properties is/are incorrect?

asked Jan 30, 2014 by sreemathi.v

1 answer

If a transition-metal compound absorbs violet radiation of the visible region, its colour would be?

asked Jan 30, 2014 by sreemathi.v

1 answer

What is the spin only magnetic moment value in Bohr magneton unit for $K_2Co(SCN)_4$?

asked Jan 30, 2014 by sreemathi.v

1 answer

What is the spin only magnetic moment value in (Bohr Magneton units) of Cr(CO)$_6$?

asked Jan 30, 2014 by sreemathi.v

1 answer

Which of the following ions is expected to be colourless - $Ti^{4+}, Cu^{2+}, V^{3+}$ and $Fe^{2+}$?

asked Jan 30, 2014 by sreemathi.v

1 answer

The Atomic numbers of Mn, Fe and Co are 25, 26 and 27 respectively. The order of Magnetic moments among the following is

asked Jan 30, 2014 by sreemathi.v

1 answer

The radius of (Atomic number of La = 57) is 1.06 A. Which one of the following given values will be closest to the radius of Lu$^{3+}$? Note: Atomic radius of Lu = 71.

asked Jan 30, 2014 by sreemathi.v

1 answer

For the given elements and their atomic numbers, which of these have the highest second ionization enthalpy?

asked Jan 29, 2014 by sreemathi.v

1 answer

Arrange La$^{3+}$, Pm$^{3+}$, Yb$^{3+}$ and Ce$^{3+}$ in order of increasing ionic radii

asked Jan 29, 2014 by sreemathi.v

1 answer

Which of the following ions has the maximum magnetic moment?

asked Jan 29, 2014 by sreemathi.v

1 answer

Calculate the expected magnetic moment of a salt where Manganese is in the +II state?

asked Jan 29, 2014 by sreemathi.v

1 answer

Which of the following statements regarding the catalytic properties of transition metals are CORRECT?

asked Jan 29, 2014 by sreemathi.v

1 answer

Which of the following transition elements are used in the preparation of $NH_3$ by haber's process?

asked Jan 29, 2014 by sreemathi.v

1 answer

Which of the following statements about iron is INCORRECT given that Iron exhibits +2 and + 3 oxidation states.

asked Jan 29, 2014 by sreemathi.v

1 answer

Which of the following is an example of Disproportionation of an oxidation state, in which a single substance is simultaneously reduced and oxidized to form two different products one with a higher oxidation state and one with a lower oxidation state?

asked Jan 29, 2014 by sreemathi.v

1 answer

What is the oxidation number of the transition metal in the complex ion [Co(H$_2$O)$_5$Cl]$^{+}$?

asked Jan 29, 2014 by sreemathi.v

1 answer

The main reason d-block elements exhibit a large number of oxidation states compared to f-block elements is because:

asked Jan 29, 2014 by sreemathi.v

1 answer

What is the oxidation state of Cobalt in CoBr$_2$?

asked Jan 29, 2014 by sreemathi.v

1 answer

The transition element which does not show variable oxidation state is

asked Jan 29, 2014 by sreemathi.v

1 answer

Highest oxidation state exhibited by a 3d-metal is

asked Jan 29, 2014 by sreemathi.v

1 answer

What is the oxidation state of Fe in FeCl$_3$?

asked Jan 29, 2014 by sreemathi.v

1 answer

Which of the following salts are colourless?

asked Jan 29, 2014 by sreemathi.v

1 answer

The most common oxidation states of Gold are:

asked Jan 29, 2014 by sreemathi.v

1 answer

The 2 most common oxidation states shown by cerium are

asked Jan 29, 2014 by sreemathi.v

1 answer

Which of the following transition metal ions are colourless?

asked Jan 29, 2014 by sreemathi.v

1 answer

The color of a transition metal complex results from which of the following reasons?

asked Jan 29, 2014 by sreemathi.v

1 answer

The oxidation state of Ni in $Ni(CO)_4$ is

asked Jan 29, 2014 by sreemathi.v

1 answer

Magnese exhibits oxidation states

asked Jan 29, 2014 by sreemathi.v

1 answer

The formula for calculating the Highest Oxidation State for a Transition metal can be given as follows: Number of Unpaired d-electrons + Two s-orbital electrons. This is true for all the transition metals except two. Which of the following two?

asked Jan 29, 2014 by sreemathi.v

1 answer

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