How is mass number (A) and atomic number (Z) of an element (X) represented?

Atomic number of an element indicates

If the atomic number (Z) and mass number (A) of an element X are related by the equation A+Z= 46 and the total number of neutrons in one atom of X is 16, then the total number of protons and electrons in one atom of element X='a'. Find value of 'a'

Complete the following sentences : (a) The mass number and atomic number of an element are not changed when it emits …………………. (b) The atomic number of a radioactive element is not changed when it emits …………………………… (c ) During the emission of a beta particle, the ................. number remains same.

What happens to the mass number and atomic number of an element when it emits gamma- radiation

Which of the following "is"//"are" correct when a nuclide of mass number (A) and atomic number (Z) undergoes radioactive process?

An element X decays , first by positron emission and then two alpha -particles are emitted in successive radiactive decay. If the product nucleus has a mass number 229 and atomic number 89 , the mass number and atomic number of element X are.

An element X has a mass number 4 and atomic number 2. Write the valency of this element.

Mass number of a nucleus X is A and atomic number is Z. Find mass number and atomic number of the new nucleus (say Y) after the emission of m-alpha particles and n-beta particles.

Define atomic number and mass number of an atom.

From the symbol underset(2)overset(4)"" He for the element helium, write down! the mass number and the atomic number of the element.