The mass number of an atom tells us about its atomic weight. What is the atomic weight of carbon?

6 units

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12 units

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18 units

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36 units

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Solution

The correct option is B 12 units
The atomic weight of carbon is the same as the mass number of Carbon i.e. 12. It has 6 protons, 6 electrons, and 6 neutrons.

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Similar questions

The mass number of an atom tells us about its atomic weight. What is the atomic weight of carbon?

Q. The atomic weight of an unknown element, in atomic mass units (amu), is approximately

20 %

less than that of calcium. The atomic weight of calcium is

40

amu. Which of the following best approximates the atomic weight, in amu, of the unknown element?

The mass numbers of three isotopes of an element are 10, 12, and 14 units. Their percentage abundance is 80, 15 and 5, respectively. What is the atomic weight of the element?

___

Q. An atom of an element contains

13

electrons. Its nucleus has

14

neutrons. Find out its atomic number and approximate atomic mass. An isotope has atomic mass

2

units higher. What will be the number of protons, neutrons and electrons in the isotope?

Q. Assertion :The nucleus

_{Z}^{A} X

is having atomic mass as well as its mass number as

A .

Reason: Mass number of an element is an integer that specifies an isotope and has no units, while atomic mass is generally not an integer.

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The mass number of an atom tells us about its atomic weight. What is the atomic weight of carbon?

The correct option is B 12 unitsThe atomic weight of carbon is the same as the mass number of Carbon i.e. 12. It has 6 protons, 6 electrons, and 6 neutrons.

The correct option is B 12 units
The atomic weight of carbon is the same as the mass number of Carbon i.e. 12. It has 6 protons, 6 electrons, and 6 neutrons.