Number of protons, neutrons and electrons in the element `._89^231 Y` is.

The number of protons, neutrons and electrons in a neutral atom of the element ''_89^231X are ________respectively.

Indicate the number of electrons, protons and neutrons in the element ._(19)^(39)K .

Calculate number of proton , neutron and electron in element potassium with atomic number 19 and mass number 39.

The sum of the number of protons, neutrons and electrons in tritium is ___________.

The number of protons , electrons and neutrons in tritium are

The atomic weight of an element is 39.The number of neutrons in its nucleus is one more than the number of protons. The number of protons, neutrons and electrons respectively in its atom would be

The number of protons and neutrons for most stable elements is

The number of protons and neutrons for most stable elements is