The atomic mass of an element is 24 and its atomic number is 12. Show how the atom of the element is constituted?

An element with atomic number 21 is a

The electronic configuration of an element with atomic number 26 is

Element with atomic number 18 belongs to

Atomic mass of an element is not necessarily a whole number because :

This transition element with the lowest atomic number is

The element with atomic number 35 lies in group

Atomic mass number of an element is 232 and its atomic number is 90 . The end of radioactive disintegration we obtain an isotope of lead with A = 208 and Z = 82 . Then the number of emitted alpha and beta particles are

The atomic number of an element is 17 and its mass number is 37. The number of protons, electrons and neutrons present in the neutral atom are :