Question

define atomic no., mass no.,atomic mass, mole. ​

Answer 1

Answer:

The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus. It is approximately equal to the atomic mass of the atom expressed in atomic mass units.

mass atomic no:. - Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

Answer 2

Answer:

Atomic no.

the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number

Mass no.

the sum of the numbers of protons and neutrons present in the nucleus of an atom.

Atomic mass

The mass of an atom or a molecule is referred to as the atomic mass.

Mole

A mole corresponds to the mass of a substance that contains 6.023 x 1023 particles of the substance.

Explanation:

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