Home / Atoms and Electrons – 2 – 6

Atoms and Electrons – 2 – 6

76. The electrons in the conduction band are known as ……..

(a) bound electrons
(b) valence electrons
(c) free electrons
(d) none of the above

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

77. In insulators, the energy gap between valence and conduction bands is ……..

(a) very large
(b) zero
(c) very small
(d) none of the above

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

78. In a conductor, the energy gap between valence and conduction bands is ……..

(a) large
(b) very large
(c) very small
(d) none of the above

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

79. According to Bohr’s theory of atom, an electron can move in an orbit of ……..

(a) any radius
(b) certain radius
(c) some range of radii
(d) none of the above

Answer
Answer : (b)

Explanation
No answer description available for this question. Let us discuss.

80. The energy gap between valence and conduction bands in insulators is about ……..

(a) 15 eV
(b) 1.5 eV
(c) zero
(d) 0.5 eV

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

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