Beryllium (Be) has an atomic number of 4, which means it has 4 protons and normally 4 electrons to balance the positive charge of the protons. With a 2+ charge, it has lost 2 electrons.
Therefore, the number of electrons present in 9 2+ Be4 is only 2.
How many electrons are present in 9 2+
Be
4
1 answer
1 answer