Question

the atom of an element has 9 protons ,9 electrons ,10 neutrons .what will be the atomic no. of an element and product the valency of the element

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Answer 1

Explanation:

Since the number of electrons equal the number of protons, Fluorine has 9 electrons as well. Meanwhile, it's mass number of 19, minus 10 neutrons, gives you 9 protons or electrons. Hence, the atom would be Fluorine. As for the atomic number, it is obtainable through the periodic table itself

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