Default Title

Questions

Question (31)

QN007042

An atom has electronic configuration 2, 8, 7. The number of valence electrons is —

(A) 2
(B) 7
(C) 8
(D) 17

Correct Answer: B

Explanation:

Link:

Report Error

Question (32)

QN007043

The shell with principal quantum number n = 3 is called —

(A) K shell
(B) L shell
(C) M shell
(D) N shell

Correct Answer: C

Explanation:

Link:

Report Error

Question (33)

QN007044

Which rule governs the maximum capacity of electrons in shells?

(A) Octet rule
(B) Duplet rule
(C) 2n² rule
(D) Hund’s rule

Correct Answer: C

Explanation:

Link:

Report Error

Question (34)

QN007045

The electronic configuration of calcium (atomic number 20) is —

(A) 2, 8, 8, 2
(B) 2, 8, 10
(C) 2, 6, 8, 4
(D) 8, 8, 2, 2

Correct Answer: A

Explanation:

Link:

Report Error

Question (35)

QN007046

The K shell is completely filled when it contains —

(A) 1 electron
(B) 2 electrons
(C) 8 electrons
(D) 18 electrons

Correct Answer: B

Explanation:

Link:

Report Error

Question (36)

QN007047

Which electronic configuration belongs to aluminium?

(A) 2, 8, 3
(B) 2, 8, 2
(C) 2, 7, 4
(D) 2, 6, 5

Correct Answer: A

Explanation:

Link:

Report Error

Question (37)

QN007048

An atom has atomic number 15. Its electronic configuration is —

(A) 2, 8, 5
(B) 2, 5, 8
(C) 8, 2, 5
(D) 2, 10, 3

Correct Answer: A

Explanation:

Link:

Report Error

Question (38)

QN007049

Which shell is represented by n = 4?

(A) K
(B) L
(C) M
(D) N

Correct Answer: D

Explanation:

Link:

Report Error

Question (39)

QN007050

The valence shell of an atom is the —

(A) Innermost shell
(B) Middle shell
(C) Outermost shell
(D) Empty shell

Correct Answer: C

Explanation:

Link:

Report Error

Question (40)

QN007051

An atom has configuration 2, 8, 4. The number of shells occupied is —

(A) 1
(B) 2
(C) 3
(D) 4

Correct Answer: C

Explanation:

Link:

Report Error

Excel With Tutors

Learn At Your Own Pace... Because, Everyone's Pace of Learning is Different...

ExcelWithTutors

A unit of Innovexcel Edu Solution LLP.

SWIFT, RELIABLE & CONVENIENT..

Social Media

Corporate Office :
Bharat Impact Building, C-26, Sector - 59, Noida, Uttar Pradesh - 201301, India

For Student

For Tutors

OUR POLICY

Excel With Tutors : A Perfect Tutoring Platform & Repository of Learning Materials. Matches the Best Tutor as Per Your Requirement.