GATE XL Atomic Structure and Periodicity PYQs & Answers — Page 2

Questions 11–14 of 14. Imported answers require independent review unless marked reviewed.

Topic practice 14 questionsPage 2 of 2

The correct order of the first ionization energies of He, B, N and O in their corresponding ground state is

Your answerChoose one option.

He > N > O > B

O > N > B > He

He > B > N > O

N > O > B > He

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Based on molecular orbital theory, the number of paramagnetic species in the following list

N₂, N₂⁺, N₂²⁻, O₂, O₂⁺, O₂⁻ and O₂²⁻

is ____ (assume that there is no change in energy of the orbitals upon addition/removal of electrons in a molecule)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

For a 4s orbital of hydrogen atom, the magnetic quantum number (

) is

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Assuming independent non-interacting electrons, the first ionization energy of Helium atom is

Your answerChoose one option.

13.6 eV

27.2 eV

54.4 eV

108.8 eV

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE XL Atomic Structure and Periodicity PYQs