# How many neutrons and protons are there in the following nuclei? C613C, O816O, Mg1224Mg, Fe2656Fe, Sr3888Sr - Chemistry

Numerical

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

""_6^13"C", ""_8^16"O", ""_12^24"Mg", ""_26^56"Fe", ""_38^88"Sr"

#### Solution

""_6^13"C" -

Atomic mass = 13

Atomic number = Number of protons = 6

Number of neutrons = (Atomic mass) – (Atomic number)

= 13 – 6 = 7

""_8^16"O" -

Atomic mass = 16

Atomic number = 8

Number of protons = 8

Number of neutrons = (Atomic mass) – (Atomic number)

= 16 – 8 = 8

""_12^24"Mg" -

Atomic mass = 24

Atomic number = Number of protons = 12

Number of neutrons = (Atomic mass) – (Atomic number)

= 24 – 12 = 12

""_26^56"Fe" -

Atomic mass = 56

Atomic number = Number of protons = 26

Number of neutrons = (Atomic mass) – (Atomic number)

= 56 – 26 = 30

""_38^88"Sr" -

Atomic mass = 88

Atomic number = Number of protons = 38

Number of neutrons = (Atomic mass) – (Atomic number)

= 88 – 38 = 50

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Chapter 2: Structure of Atom - EXERCISES [Page 69]

#### APPEARS IN

NCERT Chemistry Part 1 and 2 Class 11
Chapter 2 Structure of Atom
EXERCISES | Q 2.3 | Page 69

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