1. Tardigrade
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  4. 234U has 92 protons and 234 nucleons total in its nucleus. It decays by emitting an alpha particle. After the decay it becomes

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Q. $^{234}U $ has $92$ protons and $234$ nucleons total in its nucleus. It decays by emitting an alpha particle. After the decay it becomes

VITEEEVITEEE 2008

Solution:

Alpha particle has mass number $ 4 $ and atomic number $2 .$ Therefore, after emission of an alpha particle. The mass number of the ${ }^{234} U$ will reduce by $ 4 $ and after decay it becomes ${}^{230} Ra$