Question

i) Define atomic mass unit.

ii) What is the numerical value of mole.

iii) Name the elements present in oxide ion.​

Answer 1

A unit of mass used to express atomic and molecular weight, equal to one twelfth of the mass of an atom of carbon -12 .

23

one mole contains exactly 6.022 140 76 × 10

elementary entities

An oxide is a chemical compound that contains at least one oxygen atom and one other element in it's chemical formula

hope this will help you

Answer 2

Answer:

i. An atomic unit of mass is defined as accurately 1/12 the mass of a carbon-12 atom. The carbon-12 atom has six neutrons and six protons in its nucleus. The atomic unit mass is symbolized as AMU or amu.