Why do the elements potassium and sodium have similar chemical properties

Sodium and potassium have similar chemical properties because they are in the same group I'm the periodic table. They are both in group 1 and, therefore, have one outer shell electron. As they have the same number of electrons in their outer shells, they react in a similar way.

This is what i found “nuclear fuel is material used in nuclear power stations to produce heat to power turbines. heat is created when nuclear fuel undergoes nuclear fission. most nuclear fuels contain heavy fissile actinide elements that are capable of undergoing and sustaining nuclear fission.” i hope this you for what your looking for. can you plz mark me brainliest?

The correct answer is c