Question

One atomic mass unit (1 amu) is closest to the mass of :-

(a) The Oxygen - 16 nucleus (b) 6.022×10²³ atoms of Hydrogen

(c) 1 proton. (d) The Carbon - 12 nucleus​

Answer 1

Answer: (d) The Carbon - 12 nucleus is the correct answer.

Explanation:

An atomic unit of mass is defined as accurately 1/12 the mass of a carbon-12 atom. The carbon-12 atom has six neutrons and six protons in its nucleus.

Hope this answer helps you!

Answer 2

Option (d)  is the correct answer

One atomic mass unit (1 amu) is closest to the mass of the Carbon - 12 nucleus​.

Explanation:

• One atomic mass unit  is symbolized as 1 amu
• Where 1 amu = Average of the proton rest mass and the neutron rest mass.
• It can also be 1 amu = $1.67377$ x $10^{-27}$ kilogram or $1.67377$ x $10^{-24}$ gram.
• The protons carry one positive charge which have a mass of one and this is approximately equal to one atomic mass unit.

• The  number of protons which is found in an atom  is equal to atomic number.
• 1 amu is equal to mass of proton which is equal to 1u or 1.
• amu is denoted by  atomic mass unit or simply u .
• Mass unit equal to exactly one-twelfth (1/12th) the mass of one atom of carbon-12 isotope is One atomic mass unit (1u).

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