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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Priyanshu kumar Best Answer
option B
sir maine jo process kiya h vo glt kaise ?
yha phle to Pb mass 206 hoga..
let me check your process
agr pb mass 206 hoga toh mere se b beta decay ki value 6 aajayegi
yes it is correct
your process is right
ok sir