Well, Al is Aluminium, which is 13. 13 + 3 is 16.
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
10
-3 electrons are gained,i.e,3 electrons are lost by Al and 3 electrons are gained by the other atom nearby.
13 in the neutral atom, 10 in the Al3+ ion
The cation Al3+
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
Aluminium will lose 3 electrons to form Al3+ ions.
10
Al2+ has 13 protonsAl itself has 13 electrons and 13 protons, 2+ means that Al has ''lost'' 2 electrons(and now have 11 electrons), the number of protons stays the same(13)Added:By the way, it is more common to take Al3+ as example, because Al has 3 valence electrons (in its outer shell) to donate to eg. oxygen: Al2O3 is formed.
-3 electrons are gained,i.e,3 electrons are lost by Al and 3 electrons are gained by the other atom nearby.
13 in the neutral atom, 10 in the Al3+ ion
The cation Al3+
Aluminum produces 3+ Hydroxideions
Aluminium lose 3 electrons and form the cation Al3+.
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AL has 3 more negative charges than positive ones
Actually all the ions will have. Al3+, O2- and N3- ions will have the same number of electrons as neon (10 electrons), whereas Br- ion will have the same number of electrons as krypton (36 electrons)