JEE Main 2004Annual, Paper 1ChemistryMediumNuclear Chemistry (historical)9× since 2002Consider the following nuclear reactions 92238M→YXN+224He{}_{92}^{238}M \to {}_Y^XN + 2{}_2^4He92238M→YXN+224He YXN→BAL+2β+{}_Y^XN \to {}_B^AL + 2{\beta ^ + }YXN→BAL+2β+ The number of neutrons in the element L isAOption A. 140BOption B. 144COption C. 142DOption D. 146CheckSkip · show solution