Thorium 90 formed from emission of -particle from uranium 92- group IIIB has been placed in group IIIB-

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Ionization Energies

Thorium 90 fo...

Question

Thorium (90) formed from emission of $α$ -particle from uranium (92, group IIIB) has been placed in group IIIB.

True

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False

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Solution

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Similar questions

_{92}^{238} U

α

α

_{92} U^{235} \to_{2} {H e}^{4} \to

_{90} {T h}^{231}

e = 92

e = 0

e = 90

p = 92

p = 2

p = 90

n = 143

n = 2

n = 141

α

_{92} U^{235} -_{2} H e^{4} \to_{90} T h^{231}

α

β

α

[_{2}^{4} H e]^{2 +}

β

_{- 1}^{0} e

23892 U (I I I B)

28490 T h

α

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