An atom contains 3 protons, 3 electrons and 4 neutrons. Give its :
(a)Atomic number

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Solution

Given:
Number of protons $= 3$
Number of electrons $= 3$
Number of neutrons $= 4$
Calculate the atomic number of the atom:
Atomic number $=$ Number of protons $=$ Number of electrons
Thus,
Number of proton= number of electrons $= 3$
Thus, the atomic number of the atom is $3$ .

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