Question

Defination of atomic structure and number and mass ​

Answer 1

Answer:

Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.

Also Known As: proton number

Related Topics: atom Moseley’s law

Answer 2

Answer:

Atomic number is the number of protons in an atom

Atomic mass is the sum of neutrons and protons in an atom

Atomic structure is that all the mass of the atom is concentrated in its nucleus which contains protons and neutrons. Electrons revolve around the nucleus in decrete orbits.