Question

Define valency and atomic mass unit

Answer 1

Atomic number is number of protons equal to neutrons in a neutral atom. And valency of an element is not to complete its octate or duplet but it is the combining capacity of an element.

Answer 2

Atomic mass-. An atomic mass unit(symbolized AMU or amu) is defined as precisely 1/12 the mass of an atomof. carbon -12. The carbon -12 (C -12)atom has six protons and six neutrons in its nucleus.


valency- combining power with other atoms when it forms chemical compound