The position of three elements A, B and C in the periodic table shown below: a) State whether A is a metal or non-metal. b) State whether C is more reactive or less reactive than A. c) Will C be larger or smaller in size than B?

The position of three elements A, B and C in the periodic table shown below:

a) State whether A is a metal or non-metal.

b) State whether C is more reactive or less reactive

than A.

c) Will C be larger or smaller in size than B?
by

1 Answer

Answer :

a) Metals lie on the left side where as non-metals are

B

C

placed on the right side of the periodic table. Group 17 is on

the right side of the periodic table, thus element A is

non-metal.

b) The chemical reactivity of non-metals decrease down the group, so element C is less

reactive than A

c) The atomic size decreases moving from left to right along a period. So atom C will be

smaller in size than B.
by

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