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1. If the number of electrons in an atom is 8 and number of protons is also 8, then

(i) What is the atomic number of the atom? and

(ii) What is the charge on the atom?

Answer :

Given: Number of electrons = 8

Number of protons = 8

(a) The atomic number of an atom is the same as the number of protons in that atom, hence its atomic number is 8.

(b) In an atom, the number of protons is equal to the number of electrons. Hence both the charges – positive and negative neutralize each other. Therefore, the atom does not possess any charge.