Nucleus of an element contains 9 protons. It's valency would be : (a) 1 (b) 2 (c) 3 (d) 5 \( \ma...

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Nucleus of an element contains 9 protons. It's valency would be :
(a) 1
(b) 2
(c) 3
(d) 5
\( \mathrm{P} \)
W
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