pulse Click on Answer tab for Answers.

Atoms and Electrons – 1 – 1

1. In general, a shell contains a maximum of …………. electrons.

(a) 2n
(b) 2n2
(c) 2n–1

(d) 2n+1

ANSWER

EXPLANATION

2. Emission of a beta particle from an atom :

(a) increases the number of protons in an atom
(b) increases the number of neutrons in an atom
(c) decreases the number of protons in an atom
(d) decreases the number of neutrons in an atom

ANSWER

EXPLANATION

3. If an atom has an atomic number of 6, then it has :

(a) 3 electrons & 3 protons
(b) 4 electrons & 2 protons
(c) 2 electrons & 4 protons
(d) 6 electrons & 6 protons

ANSWER

EXPLANATION

4. An excited electron in an atom returns to the ground state :

(a) always in one jump
(b) in one or more jumps
(c) always in two jumps
(d) always in three jumps

ANSWER

EXPLANATION

5. The maximum number of electron that an M-shell of an atom can contain is :

(a) 4
(b) 12
(c) 18
(d) 34

ANSWER

EXPLANATION

1 2 3 4 5 6 7 8 9 10

Be a Part of The New & Next

MCQs fb  MCQs G+

Share the Knowledge

Shares
Copy Protected by Chetan's WP-Copyprotect.