Question

the mass number of an element is 18.Its atom contains 8 electrons. What is the number of protons and neutrons in the atom


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Answer 1

Answer:

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Answer 2

Answer:

number of electrons=number of protons

therefore, number of protons = 8

and,

number of neutrons = mass number- atomic number

number of neutrons = 18 - 8

=> 10

{atomic number = number of protons}

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