Al is aluminum and its number 13 well it has 13 electrons the reason why they put +3 is that u lose 3 electrons to make a full valence shell and if its negative 2 for example the number would be number 8 and add 2 more electrons which makes it a full valence shell
Al3+ has the same electron configuartion as Neon. It is thus 1s22s22p6 .
Bromine is a non metal element. There are 35 electrons in a single atom.
13 protons
10 electrons
10
N3- , O2- , F- , Na+ , Mg2+ , Al3+ all have the same electron configuration as Neon.
The Fe2 plus electron configuration is 1s2 2s2 2p6 3s2 3p6 3d6.
When aluminum (Al, #13) reacts, it loses its three valence electrons to achieve the same electron configuration as neon (Ne, #10.) That configuration is 1s22s22p6. So yes, Al+3 has the same configuration as neon.
[Kr]4d105s25p6
hafnium
Al3+
Al3+
Al3+
N3- , O2- , F- , Na+ , Mg2+ , Al3+ all have the same electron configuration as Neon.
The Fe2 plus electron configuration is 1s2 2s2 2p6 3s2 3p6 3d6.
The electron configuration of Cu2+ is [Ar]3d94s0.
When aluminum (Al, #13) reacts, it loses its three valence electrons to achieve the same electron configuration as neon (Ne, #10.) That configuration is 1s22s22p6. So yes, Al+3 has the same configuration as neon.
Cobalt electron configuration is [Ar]3d7.4s2.Cobalt(2+) electron configuration is [Ar]3d7.
Cobalt(II) electron configuration is [Ar]3d7.
The electron configuration for a magnesium cation Mg2 plus is 1s2.2s2.2p6.
Here is the equation - Al3+ + 3e- -> Al
[Kr]4d105s25p6