Question

Which group of periodic tables contains no metals?
\[
  (a){\text{ IA}} \\
  (b){\text{ IIIA}} \\
  (c){\text{ VIIA}} \\
  (d){\text{ VIII}} \\
 \]

Answer 1

Hint – Amongst the given option group VII A is the group of halogens such as fluorine, chlorine, bromine, iodine etc, whereas group IA and IIIA composed of elements like Li, Na and K. Group VIII contains transition elements, so use this information to ensure that which option is the most rightful answer.

Complete answer:
As we know, groups IA and IIIA contain mostly metals such as (Li, Na, and K etc.)
Group VIII contains transition elements which are metals, for example iron, manganese, chromium and copper.
And group VII A, contains mostly non-metals such as (F, CL, Br, I and At ).
VII A is the group of halogens and it contains no metals.
The word halogen means salt producing, so halogens react with metal to form salts.
The halogen family is as follows:
Florine (F), Chlorine (Cl), Bromine (Br), Iodine (I) and Astatine (At).
So this is the required answer.

Hence option (C) is the correct answer.

Note – Generally group VIII elements show variable valency and a strong tendency to form coordination bonds, generally these compounds are colored, group 1A and IIIA elements are mostly alkali metals like hydrogen, lithium, sodium, potassium etc. These are generally soft, shiny metals that are highly reactive. Halogens that are group VIIA elements are the most reactive nonmetals and are mostly found in compounds with other elements.