Question

what is atomic no.. ​

Answer 1

Answer:

The atomic number is the number of protons in the nucleus of an atom.

Explanation:

The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that determines most of the chemical behavior of an element.

Answer 2

Atomic number :-

• This number shows the position of an element in the periodic table.The number of protons present in the nucleus or the number of electrons present outside the nucleus of an atom of an element is known as atomic mass.
• It is denoted by Z.

KNOW MORE :-

Characteristics of atom :-

• Typical sizes of atom and nucleus.
• Most of atom's mass is in the nucleus.
• Constituents: protons, neutrons, electrons.
• Electric force holds atom together.
• Nuclear force holds nucleus together.
• Atoms, ions.
• Atomic number

Atomic mass :- The atomic mass of an element is a number which express as to how many times an atom of the element is havier than 1/12th of the mass of carbon atom (C¹²).