Which one of the following general electronic configurations correctly represent a transition metal element?

Which one among the following pairs is NOT correctly matched?

With reference to 'Isotopes', which of the following statements is/are correct? 1. Atoms with identical atomic numbers but different atomic mass numbers are known as isotopes. 2. Protium, Deuterium a…

Who was the first one to propose a model for the structure of an atom?

Dalton's atomic theory successfully explained i Law of conservation of mass. ii. Law of constant composition. iii. Law of radioactivity. iv. Law of multiple proportion.

Variable oxidation numbers are possible for: