Atomic Number and Mass Number|General Representation|Summary

Atomic Number|Mass Number|Numericals

Atomic Mass Number

Define atomic number and mass number .

Define atomic number and mass number. How can you represent an atom by using atomic number and mass number? Give two examples.

Atomic Number, Mass Number, Mole|Questions|Summary

Subatomic Particles|Atomic Number & Mass Number|Questions|NCERT Questions|Isotopes|Isobars|Isoelectronic Species|Thomson Model Of Atom|Summary

If Z and A are atomic number and mass number of an element. Find the number of neutrons present in it.