Question

explain with example 1.) Mass number 2.) Atomic number.​

Answer 1

Answer:

Mass Number:

The number of protons and neutrons combined to give us the mass number of an atom. It is represented using the letter 'A.' As both protons and neutrons are present in the nucleus of an atom, they are together called nucleons. For example, an atom of carbon has 6 protons and 6 neutrons. Thus, its mass number is 12.

Atomic Number :

The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how many protons are in one atom of that element. For example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.

Neutral atoms of an element contain an equal number of protons and electrons. The number of protons determines an element's atomic number (Z) and distinguishes one element from another. For example, carbon's atomic number (Z) is 6 because it has 6 protons.

Answer 2

Answer:

1. mass number = it is the sum of the number of neutrons and the number of protons ex: the atomic number of magnesium is 12 which is equal to the number of protons, the number of neutrons of magnesium is 12 the mass number is equal to 24 (12+12)
2. Atomic number = the atomic number is the total number of protons present in the atom ex: the atomic number of sodium is 11.it contains 11 protons and 11 electrons hope this may help