Question

How many neutrons and protons are there in the following nuclei?
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Solution

space space left parenthesis straight i right parenthesis space straight C presubscript 6 presuperscript 13 colon space space Atomic space No. space left parenthesis straight Z right parenthesis space equals 6 Mass space No. space left parenthesis straight A right parenthesis space equals space 12 No. space of space proton left parenthesis straight p right parenthesis space equals 6 No. space of space neutrons space left parenthesis straight n right parenthesis space equals space 12 minus 6 space equals 6 space left parenthesis ii right parenthesis space straight O presubscript 08 presuperscript 16 colon space Atomic space No. space left parenthesis straight z right parenthesis space equals space 8 Mass space No. space left parenthesis straight A right parenthesis space equals space 16 No. space of space protons space left parenthesis straight p right parenthesis space equals 8 No. space of space neutrons space left parenthesis straight n right parenthesis space equals space 16 minus 8 space space equals space 8 space left parenthesis iii right parenthesis space Mg presubscript 12 presuperscript 24 colon space Atomic space No. space left parenthesis straight Z right parenthesis space equals space 12 Mass space No. space left parenthesis straight A right parenthesis space equals space 24 No. space of space protons space left parenthesis straight p right parenthesis space equals space 12 No. space of space neutrons space left parenthesis straight n right parenthesis space equals space 24 minus 12 space equals space 12 left parenthesis iv right parenthesis space Fe presubscript 24 presuperscript 56 colon space Atomic space No. space left parenthesis straight Z right parenthesis space equals space 26 Mass space No. space left parenthesis straight A right parenthesis space equals 56 No. space of space protons space left parenthesis straight p right parenthesis space equals space 26 No. space of space neutrons space left parenthesis straight s right parenthesis space equals space 56 minus 26 space equals space 30 left parenthesis straight v right parenthesis space Sr presubscript 38 presuperscript 88 colon space Atomic space No. space left parenthesis straight Z right parenthesis space equals space 3 Mass space No. space left parenthesis straight A right parenthesis equals space space 88 No. space of space protons space left parenthesis straight p right parenthesis space equals space 38 No space of space neutrons space left parenthesis straight n right parenthesis space equals space 88 minus 38 space equals space 50

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Structure Of Atom

Some More Questions From Structure of Atom Chapter

What are the fundamental particles present in a neutral atom having atomic number greater than 1?

Do protons and neutrons have identical mass?

When α-particles are sent through a thin metal foil, most of them go straight through the foil. What inference do you draw from it?

What did Rutherford's experiment on scattering of particles show for the first time?

What is Plum-Pudding model of the atom?

Are neutrons present in all atoms?

Why are electrons called planetary electrons?

What are nucleons?

When is the number of protons and electron same in an atom?

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