EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>WBJEE 2018>Q 6

EASY

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IMPORTANT

Earn 100

The number of unpaired electrons in ${Ni}^{2 +}$ (atomic number $= 28$ ) are

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Important Questions on Structure of Atom

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>WBJEE 2020>Q 1

The radius of the first Bohr orbit of a hydrogen atom is

0.53 \times 10^{- 8} cm .

The velocity of the electron in the first Bohr orbit is

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>WBJEE 2020>Q 2

The maximum number of electrons in an atom in which the last electron filled has the quantum numbers

n = 3, l = 2

and

m = - 1

is

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>WBJEE 2020>Q 3

The difference between orbital angular momentum of an electron in a

4 f

-orbital and another electron in a

4 s

-orbital is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>WBJEE 2019>Q 4

Which one of the following electronic arrangements is absurd?

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>WBJEE 2018>Q 5

Which of the following electronic configuration is not possible?

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>WBJEE 2018>Q 6

The number of unpaired electrons in

{Ni}^{2 +}

(atomic number

= 28

) are