Question

define term atomic number and mass number of an element with example​

Answer 1

Answer:

Atomic number is the total no of electrons or protons present In a neutral atom .

ex - N has atomic number 7 .

Mass no is the sum of no of protons and no of neutrons In a atom .

ex - N has 7 electrons and 7 protons hence mass no is 14 .

Answer 2

Answer: atomic is a number is a number which is the number of atoms present in a molecule

Explanation: atomic number is the number in which we found that the number of atoms are present in a molecules. the proton number is always same to the atomic number, whereas the neutron number is also same but if the molecule has a power of any charge of negative or positive so the the neutron number is changed.

atomic mass number is nothing but it is a number of weight of an atom.