In the sequence of the following nuclear reaction `""_(98)^(238) X overset(-alpha)(to) Y overset(-beta)(to) Z overset(-beta) (to)L overset(n alpha) (to) ""_(90)^(218) M`
What is the value of n

Options

A. 3
B. 4
C. 5
D. 6

Answer

B

Explanation

`""_(98) X^(238) overset(- (""_(2) He^(4)))(to) ""_(96) Y^(234) overset(- (""_(1) beta^(0)))(to) ""_(97) Z^(234) overset(- (""_(1) beta^(0)))(to) ""_(98) Z^(234)`
`""_(98) Z^(234) to ""_(90) Na^(218) + n(""_(2) alpha^(4))`
`234 = 218 + 4n implies n = ((234 - 218)/(4)) = 4 , 98 = 90 + 2n implies n = (8)/(2) = 4`