Plz give me answer of this question
Q.3. 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 belonging with valency 2.
(iv) An element belonging to Group 2.
(v) A rare gas.

Dear student,

1. A solid non-metal belonging to the third group      -          15 (Phosphurus)
2. A metal valency of 1                                               -           19 (Potassium)
3. A gaseous element with valency 2                          -           8 (Oxygen)
4. An element belonging to Group 2                           -           4 (Beryllium)
5. A rare gas                                                                -            2 (Helium)

Regards