Answer

Verified

347.1k+ views

**Hint:**We know that ${C^{12}}$ and ${C^{13}}$ are the two isotopes. Each of them has an equal number of protons and electrons, thus the same atomic number. The atomic number of isotopes is six. But carbon-$12$ has six neutrons while carbon-$13$ has $7$ neutrons. Hence, to characterize present day nuclear weight scale should indicate carbon iota addresses the scale.

**Complete answer:**

Usually, the atomic weight of an atom is equal to the number of protons or electrons in an atom. Hence, lots of elements have isotopes and they use average atomic mass. On the periodic table, the weight of carbon is noted as $12.01\,amu$ which is the average mass of the carbon atom.

Current nuclear weight scale depends on ${C^{12}}$. The standard unit for communicating the mass of iota is amu (nuclear mass unit). It is equivalent to \[\frac{1}{{12}}\] of the mass of a particle of carbon-$12$ . Hence option A is correct.

**Additional information:**

Researchers settled on utilizing the carbon-$12$ nuclide as the reference standard by which any remaining masses would be analyzed. By definition, one molecule of carbon-$12$ is appointed a mass of $12$ nuclear mass units (amu). A nuclear mass unit is characterized as a mass equivalent to one twelfth the mass of a particle of carbon-$12$ . The mass of any isotope of any component is communicated according to the carbon-$12$ norm. For instance, one iota of helium-$4$ has a mass of \[4.0026\] amu. An iota of sulfur-$32$ has a mass of \[31.972\] amu.

**Note:**

We have to know that the masses of individual iotas are extremely small. Utilizing a cutting edge gadget called a mass spectrometer; it is feasible to gauge such microscopic masses. A particle of oxygen-16, for instance, has a mass of \[2.66 \times {10^{ - 23}}g\]. While correlations of masses estimated in grams would have some value, it is undeniably more pragmatic to have a framework that will permit us to all more effectively think about relative nuclear masses.

Recently Updated Pages

How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE

Why Are Noble Gases NonReactive class 11 chemistry CBSE

Let X and Y be the sets of all positive divisors of class 11 maths CBSE

Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE

Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE

Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE

Trending doubts

Which are the Top 10 Largest Countries of the World?

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Give 10 examples for herbs , shrubs , climbers , creepers

Difference Between Plant Cell and Animal Cell

The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths

Change the following sentences into negative and interrogative class 10 english CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Select the word that is correctly spelled a Twelveth class 10 english CBSE