Question

compound of s and p block elements are almost white what could be the absorbed radiation : UV or visible​

Answer 1

Explanation:

The chemical compounds of the transition metal compounds are often colored- and this is due to d electrons being excited by visible light into higher energy levels within the compound. These d electrons are not present in the s p block elements so these are generally colorless. There are many exceptions-particularly in organic chemistry one example are pigments such as carotene with conjugated double bonds which absorbs visible light. The elements are another issue- the non-metallic s-p block elements are often colored, think of the halogens, sulfur as examples. again these have low level orbitals into which electrons can be excited by visible light