Test on Atomic Structure-1

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Question 1

The manganese (Z = 25) has the outer configuration

• A
• B
• C
• D

Question 2

A given orbital is labelled by the magnetic quantum number m = –1. This cannot be -

• As-orbital
• Bd-orbital
• Cp-orbital
• Df-orbital

Question 3

If the electronic structure of oxygen atom is written as 1s², 2s² it would violate -

• AHund’s rule
• BPauli’s exclusion principle
• CBoth Hund’s and Pauli’s principles
• DNone of these

Question 4

The magnetic quantum number for valency electrons of sodium is

• A3
• B2
• C1
• D0

Question 5

The ratio of the radii of first three Bohr orbits is

• A1 : 05 : 3
• B1 : 2 : 3
• C1 : 4 : 9
• D1 : 8 : 27

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