Number of neutrons present in 8g atoms of oxygen ?
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∵ 1 Atoms of the Oxygen have 9 Neutrons. ∴ 12 × 10²⁵ atoms of Oxygen have 108 × 10²⁵ neutrons
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Hello..
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atomic mass of oxygen is 16 u
remember =>
atomic number = protons = neutrons
atomic mass = number of protons + number of neutrons
**********
16 = 8 + number of neutrons
number of neutrons = 16 - 8
number of neutrons = 8
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