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Atomic Radius

Find out the ...

Question

Find out the incorrect order against the mentioned properties:

H_{2} < D_{2} < T_{2}

(Number of protons)

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H_{2} < D_{2}

(Bond energy)

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T_{2} < D_{2} < H_{2}

(Relative abundance)

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H_{2} < D_{2} < T_{2}

(Number of neutrons)

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Solution

The correct option is A $H_{2} < D_{2} < T_{2}$ (Number of protons)
Number of protons in $H_{2}, D_{2} a n d T_{2}$ are equal, they differ in number of neutrons. Since mass of $H_{2}$ is less than $D_{2}$ the bond energy of deuterium is greater.

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