Atoms and Electrons – Exercise – 1

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

(a) 2n
(b) 2n2
(c) 2n–1
(d) 2n+1

Answer
Answer : (b)
Explanation
No answer description available for this question. Let us discuss.

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
Answer : (a)
Explanation
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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
Answer : (d)
Explanation
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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
Answer : (b)
Explanation
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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
Answer : (c)
Explanation
No answer description available for this question. Let us discuss.
≡ LEVEL – Exercise – 1
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