Define atomic number and mass number of an atom.

The atomic number and the mass number of an atom remains unchanged when it emits

What is nucleus of an atom ? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number and mass number of the atom ?

If the atomic number and the mass number of X are 72 and 180 then the mass number and atomic number of X4 are-

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'

Write the complete symbols for the nuclei with (i) atomic number 17 and mass number 35 (ii) atomic number 8 and mass number 16 (iii) atomic number 26 and mass number 55 (iv) atomic number 2 and mass number 4.

Differentiate between the atomic number and the mass number.

Define the term - 'mass number of an atom. If an atom 'B' has mass number 35 & atomic number 17, state the number of protons, electrons & neutrons it contains.

State the atomic number and mass number of ""_(11)^(23) Na and draw its atomic model.

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.

The element with atomic number 84 and mass number 218 change to other element with atomic number 84 and mass number 214. The number of alpha and beta -particles emitted are respectively: