electronic configuration

What is the electronic configuration of potassium bromide and magnesium nitride?

Thank you

Reply 1

What is the electronic configuration of potassium bromide and magnesium nitride?
Thank you

K has an atomic number of 19 so the configuration would be: 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 4 s 1, the shorthand write of this would be [Ar] 4s1
Br has an atomic number of 35 so the configuration of that would be: [Ar] 3d¹⁰ 4s² 4p⁵ (the shorthand write I'm too lazy to do the long one😭)
the you combine the two,

Reply 2

UtterlyUseless69

Original post by user87464739

What is the electronic configuration of potassium bromide and magnesium nitride?

Thank you

I think you mean the electronic configurations of the ions in potassium bromide.

As above, I would suggest starting by writing out the electron configurations of the constituent elements. This could be done in noble gas notation (e.g K is [Ar] 4s1, Br is [Ar] 4s2 3d10 4p5) or in full form (e.g K is 1s2 2s2 2p6 3s2 3p6 4s1 and Br is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5).

Remember that metals typically lose electrons from their outermost shells and nonmetals typically gain electrons, adding them to their outermost shells. Which parts of each electron configuration show the outer shells and what happens to the electron configurations when

(a) the metal loses the outer electron(s)

(b) the nonmetal adds the new electron(s) to its outermost shell