Beryllium-9 has 9 nucleons.
Beryllium has 4 protons
Beryllium has 4 protons.
Beryllium has 4 electrons.
Beryllium has 2 bonding sites.
Beryllium-10 has 4 protons.
There are A + Z nucleons in an element
238 nucleons in 238U.
The "11" refers, precisely, to the number of nucleons.
Beryllium has 4 protons
The valence of beryllium is two.
Beryllium has 4 electrons.
Beryllium has 4 protons.
Beryllium has 4 electrons.
Beryllium has two electron shells.
Beryllium has two valence electrons.
Beryllium has 2 bonding sites.
Beryllium-10 has 4 protons.