1.

(a) What is meant by (i) a group, and (ii) a period, in a periodic table? (b) How many periods and groups are there in the long form of the periodic table? (c) Give two examples each of (i) group 1 elements (ii) group 17 elements (iii) group 18 elements.

Answer»

(a) What is meant by (i) a group, and (ii) a period, in a periodic table?

(b) How many periods and groups are there in the long form of the periodic table?

(c) Give two examples each of (i) group 1 elements (ii) group 17 elements (iii) group 18 elements.



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