Question

How many neutrons and protons are there in the following nuclei? \(_{6}^{13}\textrm{C}\), \(_{8}^{16}\textrm{O}\), \(_{12}^{24}\textrm{Mg}\), \(_{26}^{56}\textrm{Fe}\), \(_{38}^{88}\textrm{Sr}\).

Answer 1

Concept Used:

For a nucleus ^A_ZX:

Number of protons = Z
Number of neutrons = A − Z

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(i) ¹³₆C

Protons = 6
Neutrons = 13 − 6 = 7

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(ii) ¹⁶₈O

Protons = 8
Neutrons = 16 − 8 = 8

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(iii) ²⁴₁₂Mg

Protons = 12
Neutrons = 24 − 12 = 12

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(iv) ⁵⁶₂₆Fe

Protons = 26
Neutrons = 56 − 26 = 30

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(v) ⁸⁸₃₈Sr

Protons = 38
Neutrons = 88 − 38 = 50

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Final Answer:

¹³₆C → Protons = 6, Neutrons = 7
¹⁶₈O → Protons = 8, Neutrons = 8
²⁴₁₂Mg → Protons = 12, Neutrons = 12
⁵⁶₂₆Fe → Protons = 26, Neutrons = 30
⁸⁸₃₈Sr → Protons = 38, Neutrons = 50