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?

(a) The nucleus of an atom has 5 protons and 6 neutrons then the atomic no. 5.

(b) The nucleus of an atom has 5 protons and 6 neutrons then the mass no. will be 6+5 = 11.


(c) The nucleus of an atom has 5 protons and 6 neutrons then the no. of electrons = 5.


(d) The nucleus of an atom has 5 protons and 6 neutrons then the no. of valance electrons, per atom = 3.


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