Answer:
I`m pretty sure that B is right
Explanation:
Answer:
i would have to say oxygen .
Explanation:
Answer:
the answer is 12
Explanation:
In one formula unit of Al2(SO4)3 A l 2 ( S O 4 ) 3 , there would be twelve atoms of oxygen.
Answer:A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius. Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital.
Answer: Option (d) is the correct answer.
Explanation:
The atomic number of Al is 13, so the electronic configuration of
is as follows.

=
= [Ne]
The atomic number of Sc is 21, so the electronic configuration of
is as follows.

= ![[Ar]4s^{2}3d^{1}](https://tex.z-dn.net/?f=%5BAr%5D4s%5E%7B2%7D3d%5E%7B1%7D)
= [Ar]
The atomic number of As is 33, so the electronic configuration of
is as follows.

= ![[Ar]4s^{2}3d^{10}4p^{3}](https://tex.z-dn.net/?f=%5BAr%5D4s%5E%7B2%7D3d%5E%7B10%7D4p%5E%7B3%7D)
=
= [Kr]
The atomic number of Ga is 31, so the electronic configuration of
is as follows.

= ![[Ar]4s^{2}3d^{10}4p^{1}](https://tex.z-dn.net/?f=%5BAr%5D4s%5E%7B2%7D3d%5E%7B10%7D4p%5E%7B1%7D)
= ![[Ar]3d^{10}](https://tex.z-dn.net/?f=%5BAr%5D3d%5E%7B10%7D)
Therefore, we can conclude that galium (Ga) ion does not have a noble gas configuration in its ground state.