Question

The number of protons, electrons and neutrons in nitrogen (nitrogen atomic number is = 7 & mass number is =14) are respectively *



a. 7, 7, 7

b. 14, 7, 7

c. 7, 14, 7

d. 14,14, 7

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Answer 1

${\Large{\underline{\boxed{\bf{\red{Option \:\: A = 7, 7, 7}}}}}}$

Answers :-

● We know that Nitrogen has

• Atomic number = 7
• Mass number 14

■ Here number of Protons are

${ \underline{ \boxed{ \bf{Atomic \: number = Number \: of \: protons}}}}$

So,

》→ Atomic number = Number of Protons.

》→ ${\green{ \bf{Number \: of \: Protons = 7 }}}$

• There are 7 protons because the atomic number is always equal to the number of protons present.

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■ Here number of electrons are

• There are 7 electrons because the number of protons and the number of electrons are always the same in an atom.

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■ Here number of Neutrons are

${ \underline{ \boxed{ \sf{Mass \: Number = (Number \: of \: Protons) + (Number \: of \: Neutrons)}}}}$

So,

》→ 14 = 7 + Number of Neutrons

》→ 14 - 7 = Number of Neutrons

》→ ${\green{ \bf{Number\: of \: Neutrons = 7 }}}$

• There are 7 neutrons.

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■ Final Answer:-

So, finding number of protons, electrons and neutrons in nitrogen, we get :-

• Number of Protons = 7
• Number of Electrons = 7
• Number of Neutrons = 7

Hence Option A is correct.

Answer 2

Answer:

a)7,7,7 is a correct answer