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Question
The ion of an element has 3 positive charges. The mass number of the atom is 27 and the number of neutrons is 14. Then what is the number of electrons in the ion?
The ion of an element has 3 positive charges. The mass number of the atom is 27 and the number of neutrons is 14. Then what is the number of electrons in the ion?
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Solution
The correct option is B 10
Mass number= No.of protons + No. of neutrons
27-14 = No. of protons
No. of protons = No. of electrons (For a neutral atom)
= 13 - 3 (3 positive charges)
= 10 electrons
10
Mass number= No.of protons + No. of neutrons
27-14 = No. of protons
No. of protons = No. of electrons (For a neutral atom)
= 13 - 3 (3 positive charges)
= 10 electrons
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