Question

what is meant by atomic mass number ? explain how thr atomic number and mass number of carbon are 6 and 12 respectively​

Answer 1

Explanation:

Atomic number of an element refers to the number of electrons or protons present in that element. It is denoted by Z.

Mass number refers to the total mass of the element. Since the mass of electrons are negligible, the mass of an element is often taken as the sum of number of protons and neutrons. It is denoted by letter A.

Carbon has 6 protons, 6 electrons and 6 neutrons. So the atomic number is 6 as the number of protons is 6. The mass number is 12 as the sum of protons and neutrons is 12.

Mass Number = 6 protons + 6 neutrons = 12

hope this may help u........

Answer 2

Atomic Number= No.Of electrons or protons present In an atom is called atomic number

Carbon Atomic number =6 It contains 6 electrons protons also 6

Mass Number of carbon is Sum of protons and Sum of neutrons is called Mass number

Protons 6

Neutrons 6

sum =12

Therefore mass number of carbon is 12