Question

Give two similarities and differences between Be and Be2+

Answer 1

Beryllium with chemical symbol Be is an element with atomic number of 5.

Be is a neutral element. It has five protons, five electrons and 5 neutrons.

Be2+ is a positively charged ion [cation] of Be. It is formed when Be donate the two electrons that are in its outermost shell.

Be2+ is a charged ion. It has five protons, 3 electrons and 5 neutrons.

SIMILARITIES

1. Both have 5 protons.

2. Both have 5 neutrons.

DIFFERENCES

1. Be is a neutral atom whiel Be2+ is a positively charged ion.

2. Be has 5 electrons while Be2+ has 3 electrons.

3. Be has zero oxidation number while Be2+ has +2 oxidation number.

Answer 2

Be 2+ is the charged ion of Be
-same amount of protons and neutrons, but has 2 less electrons, giving it full valence shell and + 2 charge