By determining the element's orbital diagram, or its electron configuration.
In the element bromine (Br), there is only 1 unpaired electron. It has 7 valence electrons, so 3 pairs, plus an unpaired electron.
Phosphorus has three unpaired electrons in its ground state.
That would be 0. The ground state of every element except for Hydrogen is 1s2 which has no unpaired electrons. (only valence electrons have the ability to be unpaired). Full configuation of Fe would be: 1s2 2s2 2p6 3s2 3p6 4s2 3d6 WWWWWWWWWRRRRRRROOOOOOONNNNNNGGGGGGG!!!!!!!
Cesium has 1 unpaired electron.
An oxide ion (O^2-) has 0 unpaired electrons. It has a full outer electron shell with 8 electrons, fulfilling the octet rule.
1
Barium has 0 unpaired electrons. It has a full outer shell of electrons, which is why it is a stable element.
In group 3A elements, or elements in group 13, have only one unpaired electrons.
In the element bromine (Br), there is only 1 unpaired electron. It has 7 valence electrons, so 3 pairs, plus an unpaired electron.
There are no unpaired electrons in strontium.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
three unpaired electrons
Aluminum has three unpaired electrons.
Germanium has 4 unpaired electrons.
There are three unpaired electrons in an arsenic atom. Arsenic has five valence electrons, with two paired and three unpaired electrons.
6 unpaired electrons
Phosphorus has three unpaired electrons in its ground state.