Atomic Structure (KVPY Stream-SA (Class 11) Chemistry): Questions 16 - 19 of 30

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Question number: 16

» Atomic Structure » Rules for Filling Electrons in Orbitals

Appeared in Year: 2014

MCQ▾

Question

The order of increasing energies of the orbitals follows-

Choices

Choice (4) Response

a.

3s,3p,3d,4s,4p

b.

4p,5s,4d,5p,6s

c.

3p,3s,4s,3d,4p

d.

3s,3p,3d,4p,4s

Question number: 17

» Atomic Structure » Electronic Configuration of Elements

MCQ▾

Question

What is the complete ground state electron configuration for K+ ?

Choices

Choice (4) Response

a.

[Ar]4s1

b.

1s22s22p63s23p54s1

c.

1s22s22p63s23p64s1

d.

1s22s22p63s23p6

Question number: 18

» Atomic Structure » Heisenberg Uncertainty Principle

Assertion-Reason▾

Assertion (Ꭺ)

If an electron is located within the range of 0.1 Å then the uncertainty in velocity is approximately 6×106ms .

(h=6.62×1034kgm2sec1,me=9.1×1031kg)

Reason (Ꭱ)

Trajectory (path of motion) of above electron can defined,

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

Question number: 19

» Atomic Structure » Electronic Configuration of Elements

Appeared in Year: 2015

MCQ▾

Question

The element, which readily forms an ionic bond, has the electronic configuration

Choices

Choice (4) Response

a.

1 s2 2 s2 2 p3

b.

1 s2 2 s2 2 p2

c.

1 s2 2 s2 2 p1

d.

1 s2 2 s2 2 p6 3 s1

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