Atomic number is equal to:
Number of neutrons
Number of protons + Number of neutrons
Number of protons
Number of protons + Number of electrons
The atomic number of an element is the same as the number of protons in the nucleus of its atom.
Atomic number = Number of protons
(a) an atom has equal number of electrons and protons
(b) an atom has equal number of electrons and neutrons
(c) an atom has equal number of protons and neutrons
(d) an atom has equal number of electrons, protons and neutrons
Atomic number = number of protons and number of protons = number of electrons. So can we say that atomic number = number of electrons