A nitrogen atom has 7 protons and 7 neutrons. Identify its atomic symbol.

77 N

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714 N

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1414 N

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147 N

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Solution

The correct option is D $147 N$

It conveys the information that the number of protons and nuetrons = 7.

So, atomic number of nitrogen is = 7, this is the value of Z for nitrogen.

The sum of protons and neutrons represents the mass number.

So, the mass number = number of nuetrons + number of protons = 7 + 7 = 14., this is the value of A.

Therefore, the correct option is c.

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