Home
Class 12
CHEMISTRY
Consider the following nuclear reactions...

Consider the following nuclear reactions:
`""_(92)""^(238)Mto.""_(y)""^(x)N+2.""_(2)""^(4)He, ""_(x)""^(y)Nto ""_(B)""^(A)L+2beta""^(+)`
The number of neutrons in the element L is

A

140

B

144

C

142

D

146

Text Solution

Verified by Experts

The correct Answer is:
B
`""_(92)M^(238) to ""_(y)N^x + 2 ""_(2)He^4 `
`""_(y)N^x to ""_(B)L^A + 2 beta^+`
`""_(y)N^x = ""_(92-2xx2)N^(238-2xx2) = ""_(88)N^(230)`
`""_(88)N^(230) overset(2beta^+)to ""_(88-2)L^((230)) = ""_(86)L^(230)`
Total no. of neutrons in `""_(86)L^(230)`
230 - 86 = 144
Promotional Banner

Similar Questions

Explore conceptually related problems

Consider the following nuclear reactions : ._(92)^(238)M to _(Y)^(X)N+2_(2)^(4)"He " ,_(Y)^(X)N to _(B)^(A)L+2beta^(+) The number of neutrons in the element L is :

Consider the follwing nuclear reactions: ._(92)^(238) M rarr ._(y)^(x)N + 2 ._(2)He^(4) ._(y)^(x)N rarr ._(B)^(A)L + 2beta^(+)

Unstable nuclei attain stability through disintegration. The nuclear stability is related to neutron proton ratio (n//p) . For stable nuclei n//p ratio lies close to unity for elements with low atmoic numbers (20 or less) but it is more than 1 for nuclei having higher atomic numbers. Nuclei having n//p ratio either very high or low undergo nuclear transformation. When n//p ratio is higher than required for stability, the nuclei have the tendency to emit beta -rays. while when n//p ratio is lower than required for stability, the nuclei either emits alpha -particles or a positron or capture K -electron. For reaction ._(92)M^(238) rarr ._(y)N^(x) + 2 ._(2)He^(4), ._(y)N^(x) rarr ._(B)L^(A) + 2 ._(-1)e^(0) The number of neutrons in the element L is