An atom contains 3 protons n 4 electron find its atomic number n mass

1.	An atom contains 3 protons n 4 electron find its atomic number n mass number
Answer» number = Number of protons = 3Mass number = Number of protons + number of NEUTRONS =3 + 4 = 7Electronic configuration of the atom is 2,1(K,L)HENCE, its valency is 1.

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