An element X is in period 4, group 1 (configuration ends with $4s^1$). Element Y is in period 5, group 1. Both have—

Question

Accepted Answer

one electron in their outer shell

Answer

seven electrons in their outer shell

Answer

complete outer shells

Answer

partially filled $d$ orbital

An element X is in period 4, group 1 (configuration ends with 4s14s^14s1). Element Y is in period 5, group 1. Both have—