Question

Complete the following nuclear equation:
${}_{26}^{69}\text{Fe}\to \beta +$___

• A. ${}_{25}^{58}\text{Mn}$
• B. ${}_{27}^{58}\text{Co}$
• C. ${}_{25}^{59}\text{Mn}$
• D. ${}_{27}^{59}\text{Co}$
• E. ${}_{25}^{60}\text{Mn}$

Answer 1

The correct option is D ${}_{27}^{59}\text{Co}$

The completed nuclear equation is
${}_{26}^{59}\text{Fe}{\to }_{-1}^0\beta {+}_{27}^{59}\text{Co}$
Atomic number of $Co$ $=26-(-1)=27$
Mass number of $Co$ $=59-0=59$