Directions _ In the following questions, an Assertion (A) is follow...

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Directions _ In the following
questions, an Assertion (A) is followed by a
corresponding Reason (R). Use the following keys to
choose the appropriate answer.
(a) Both A and R are correct; R is the correct explanation of A.
(b) Both A and R are correct; and R is not the correct explanation of \( \mathrm{A} \).
(c) A is correct; \( \mathrm{R} \) is incorrect.
(d) \( \mathrm{R} \) is correct; \( \mathrm{A} \) is incorrect.
Assertion (A) The third period in the periodic table contains 18 electrons and not 8 like 2 nd period.
Reason (R) In third period, filling of electron starts from \( 3 s^{1} \) and complete at \( 3 p^{6} \).
\( \mathrm{W} \)
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