Explain why a new element is formed by `alpha`-particle emission but no new element is formed by `gamma`- ray emission form a radioactive element.

For the atom produced by beta - particle emission form a radioactive atom

Protoplasmic elements form

What are formed elements are blood?

Explain why the elements of group-2 form M^(2+) ions but not M^(3+) ions.

Due to emission of beta -particle the mass of the daughter element-

An element forms X_2 with triple bond. The configuration of the element is

Why the photoectronic emission can not be performed by using X-rays and gamma rays?

Which element is mixed with copper to form Brass?

Explain why transition elements have many irregularities in their electronic contigurations.

When an aluminium nucleus (._13Al^27) is hit by a proton a new element is formed with the emission of alpha -particle. (ii)Write the complete equation of reaction , (ii)Identify the new element and (iii)Determine the number of neutrons and protons in the nucleus .