Atoms of Argon and Calcium are ideal examples of ______________

Isotone

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Isotope

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Isochor

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Isobar

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Solution

The correct option is D
Isobar

Atoms having same atomic mass but a different atomic number are called Isobars. The sum of protons and neutrons together give us the atomic mass and hence, we can conclude the number of nucleons present in the nucleus is equal to the atomic mass of an atom.

Calcium (atomic number 20) has 20 neutrons and Argon (atomic number 18) has 22 neutrons.

Atomic masses of both add up to 40 amu.

Suggest Corrections

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Q. Five moles of a gas is put through a series of changes in a cyclic process as show in the graph.
Processes

A \to B, B \to C a n d C \to A

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Q. The atom A, B, C have the configuration
A

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[Z(90) + n(146)], B

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\to

[Z(90) + n(148)] So that
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The wrong statements are:

Q. Atoms of

_{7} A,_{8} B a n d_{9} C

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_{8} B

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_{7} A

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_{9}^{17} C

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_{8} B

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A

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Structures of nuclei of three atoms A, B, and C are given below: A has 90 protons and 146 neutrons. B has 92 protons and 146 neutrons. C has 90 protons and 148 neutrons. Based on the above data, which of these atoms are isotopes and which are isobars?

_{Z_{1}}^{A} X

and

_{Z_{2}}^{A} Y

are examples of isobars

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