Question

AL13 find the valency​

Answer 1

Alluminuim:-

Electrons in K shell=2,M shell=8, and N shell=3

And Valency is the electrons in outermost shell and that is 3.

Answer 2

Answer:

please make me brainlist.

Explanation:

If the number of electrons in the outer shell is between one to four, the compound is said to have positive valency. For compounds with electrons four, five, six, or seven, the valency is determined by subtracting the electron from eight. All noble gases except for Helium have eight electrons.