Question

5.Which of the following represents 12 u? ਹੇਠ ਲਿਖੀਆਂ ਵਿੱਚੋ ਕਿਹੜਾ 12u ਦਰਸ਼ਾਉਂਦਾ ਹੈ ?
(a) Mass of 1 hydrogen atom 1 ਹਾਈਡ੍ਰੋਜਨ ਪਰਮਾਣੂ ਦਾ ਪੁੰਜ
(b) Mass of C-12 atom C - 12 ਪਰਮਾਣੂ ਦਾ ਪੁੰਜ
(c) Mass of O -16 atom O -16 ਪਰਮਾਣੂ ਦਾ ਪੁੰਜ
(d) 1/12th of mass of C-12 atom. C -12 ਪਰਮਾਣੂ ਦੇ ਪੁੰਜ ਦਾ 1/12ਵਾ ਭਾਗ​

Answer 1

Answer:

I can't understand this language

Step-by-step explanation:

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Answer 2

$\huge\bold\red{Answer}$

option B is correct

The atomic mass (ma or m) is the mass of an atom. Although the SI unit of mass is kilogram (symbol: kg), the atomic mass is often expressed in the non-SI unit dalton (symbol: Da, or u) where 1 dalton is defined as 1⁄12 of the mass of a single carbon-12 atom, at rest.[1] The protons and neutrons of the nucleus account for nearly all of the total mass of atoms, with the electrons and nuclear binding energy making minor contributions. Thus, the numeric value of the atomic mass when expressed in daltons has nearly the same value as the mass number. Conversion between mass in kilograms and mass in daltons can be done using the atomic mass constant {\displaystyle m_{\rm {u}}={{m({\rm {^{12}C}})} \over {12}}=1\ {\rm {Da}}}{\displaystyle m_{\rm {u}}={{m({\rm {^{12}C}})} \over {12}}=1\ {\rm {Da}}}.