Chapter 30, Problem 12Q

To determine

Missing particle or nucleus

Answer to Problem 12Q

Solution:

a. Scandium-45

b. Copper-58

c. The positron and the neutrino

d. Alpha particle

e. The electron and the antineutrino are

Explanation of Solution

a) ${}_{20}{}^{45}Ca\to {}_{21}{}^{45}Sc+e^{-}+\overline{\nu }$

Scandium-45 is the missing nucleus.

b)${}_{29}{}^{58}Cu\to {}_{29}{}^{58}Cu+\gamma$

Copper-58 is the missing nucleus.

c)${}_{24}{}^{46}Pu\to {}_{23}{}^{46}Sc+\alpha$

Scandium-45 is the missing nucleus

d)${}_{94}{}^{234}Np\to {}_{94}{}^{239}Pu+\alpha$

Alpha particle is missing

e)${}_{93}{}^{239}Np\to {}_{94}{}^{239}Pu+e^{-}+\overline{\nu }$

The electron and the antineutrino are the missing particles.