If 92 U 238 changes to 85 At 210 by a series of - and - decays- The number of - and - decays undergone isA- 7 and 5B- 7 and 7C- 5 and 7D- 7 and 9

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Continuity in an Interval

If 92 U 238 c...

Question

If ₉₂U²³⁸ changes to ₈₅At²¹⁰ by a series of α and β decays. The number of α and β decays undergone is

7 and 5

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7 and 7

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5 and 7

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7 and 9

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Solution

The correct option is B
7 and 7

Let number of α-decays are x and number of β-decays are y. Then
92-2x-y=85
Or 2x-y=7
and 238 - 4x =210
x=7
Substituting this value in Eq.(1). We get
y=7

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If 92U238 changes to 85At210 by a series of α and β decays. The number of α and β decays undergone is

The correct option is B 7 and 7Let number of α-decays are x and number of β-decays are y. Then92-2x-y=85Or 2x-y=7and 238 - 4x =210x=7Substituting this value in Eq.(1). We get y=7

If ₉₂U²³⁸ changes to ₈₅At²¹⁰ by a series of α and β decays. The number of α and β decays undergone is

The correct option is B
7 and 7

Let number of α-decays are x and number of β-decays are y. Then
92-2x-y=85
Or 2x-y=7
and 238 - 4x =210
x=7
Substituting this value in Eq.(1). We get
y=7