Question

Consider the two electron arrangements for neutral atoms A and B. What is the difference between atom A and atom B? A - 1s2, 2s2, 2p6, 3s1 B - 1s2, 2s2, 2p6, 5s1

Answer 1

The outer electron of atom B has moved to a higher energy state.B - 1s2, 2s2, 2p6, 5s1

Answer 2

The difference between atom A and atom B is that

The outer electron of atom B has moved to a higher energy state

Step-by-step explanation

The 1 outer electron of of atom B absorb energy and it jump to higher orbital that is from 3s orbital to 5s orbital .

At this state the electrons are said to be in excited state.

Electrons then emit energy which make them fall to lower state.