1(h)
Match the atomic number 2, 4, 8, 15, and 19 with each of the following:
(i) A solid non metal belonging to the third period.
(ii) A metal of valency 1.
(iii) A gaseous element with valency 2.
(iv) An element belonging to Group 2.
(v) A rare gas.
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(i) 15
(ii) 19
(iii) 8
(iv) 4
(v) 2