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Chemistry

Some basic concepts of chemistry

Structure of Atom

Classification of Elements and periodicity in properties

Chemical Bonding and Molecular Structure

States of Matter: Gases and Liquids

Chemical Thermodynamics

Some p-block Elements

Organic Chemistry: Some Basic Principles and Techniques

Hydrocarbons

Environmental Chemistry

What is weight of NaOH present in 250 cc of a 2M Solution ?

answered Feb 2, 2022 by meena.clay6

1 answer

What is relative mass and charge of an electron?

answered Feb 17, 2020 by dashsourav53

1 answer

Which of the following ion is the largest in size ?

answered Jul 11, 2019 by meena.clay6

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Which of these dose not reflect the periodicity of the elements

answered Jul 10, 2019 by meena.clay6

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Which statement is incorrect?

answered Jul 9, 2019 by meena.clay6

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Which out of $Cu^{2+},Fe^{2+}$ and $Cr^{3+}$ has highest paramagnetism and why

answered Jul 9, 2019 by meena.clay6

1 answer

How many radial/spherical nodes will be present in the 5f orbitals?

answered Jul 9, 2019 by meena.clay6

1 answer

What will be the maximum number of electrons having the same spin in an atom with n+l=4 ?

answered Jul 9, 2019 by meena.clay6

1 answer

When is the energy of electron regarded as zero.

answered Jul 9, 2019 by meena.clay6

1 answer

How many unpaired electrons are present in $Pd (Z = 46)$ ?

answered Jul 8, 2019 by meena.clay6

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Which element does not have any neutron?

answered Jul 8, 2019 by meena.clay6

1 answer

The increasing order (lowest first) for the values of e/m (charge/mass) for

answered Jul 5, 2019 by meena.clay6

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Atomic number of an element is equal to the number of

answered Jul 3, 2019 by meena.clay6

1 answer

Which out of $Cu^{2+},Fe^{2+}$ and $Cr^{3+}$ has highest paramagnetism and why

answered Jul 3, 2019 by meena.clay6

1 answer

How many radial/spherical nodes will be present in the 5f orbitals?

answered Jul 3, 2019 by meena.clay6

1 answer

What will be the maximum number of electrons having the same spin in an atom with n+l=4 ?

answered Jul 3, 2019 by meena.clay6

1 answer

When is the energy of electron regarded as zero.

answered Jul 3, 2019 by meena.clay6

1 answer

How many unpaired electrons are present in Pd (Z = 46) ?

answered Jul 3, 2019 by meena.clay6

1 answer

Which element does not have any neutron?

answered Jul 3, 2019 by meena.clay6

1 answer

Yellow light emitted from a sodium lamp has a wavelength $(\lambda)$ of 580 nm. Calculate thefrequency $(ν)$ and wave number of the yellow light.

asked Jul 3, 2019 by meena.clay6

0 answers

Compare the wavelengths for the first three lines in the Balmer series with those which arise from similar

answered Jun 28, 2019 by meena.clay6

1 answer

A 1 MeV proton is sent against a gold leaf (Z = 79). Calculate the distance of closest approach for head on collision.

answered Jun 28, 2019 by meena.clay6

1 answer

Atomic number of an element is equal to the number of

answered Jun 27, 2019 by meena.clay6

1 answer

The angular momentum of electrons in d orbital is equal to

answered Jun 27, 2019 by meena.clay6

1 answer

Calculate the total number of angular nodes and radial nodes present in 30 orbitals

answered Jun 27, 2019 by meena.clay6

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An element with mass number 81 contains $31.7 \%$ more neutrons as compared to protons. Assign the atomic symbol.

answered Jun 27, 2019 by meena.clay6

1 answer

What is the relationship between frequency and wavelength of light?

answered May 20, 2019 by meena.clay6

1 answer