Question

Odd man out of carbon , boron , sulphur , cobalt.

Answer 1

Carbon boron and sulphur are representative elements while cobalt is transition element

So odd one is cobalt

Answer 2

Cobalt is a concoction component with image Co and nuclear number 27.

Like nickel, cobalt is found in the Earth's outside layer just in synthetically joined shape, put something aside for little stores found in composites of regular brilliant iron.

Introduction of people and creatures to dimensions of cobalt ordinarily found in the earth isn't unsafe.

The free component, created by reductive purifying, is a hard, glistening, silver-dim metal.