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The Noble Gas Having Only Two Electrons in Its Valence Shell Is: (A) Ar (B) Ne (C) He (D) Kr - CBSE Class 10 - Science

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Question

The noble gas having only two electrons in its valence shell is:
(a) Ar
(b) Ne
(c) He
(d) Kr

Solution

(c) He
Atomic number of helium is 2. It contains 2 electrons in its atom.

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Solution The Noble Gas Having Only Two Electrons in Its Valence Shell Is: (A) Ar (B) Ne (C) He (D) Kr Concept: Formation and Properties of Ionic Compounds.
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