An atom of an element has 26 electrons and has a mass number 56. The nucleus of this atom contains____neutrons.
An atom has 26 electrons and its atomic weight is 56. The number of neutrons in the nucleus of the atom will be
The nucleus of an atom has 5 protons and 6 neutrons. What would be the (a) atomic number, (b) mass number, (c) the number of electrons, and (d) the number of valence electrons, per atom of this element?
Atomic mass of an element is 1. This element has _______ present in the nucleus of its atom.