How is valency measured?

Answer 1

using the Periodic Table, you look at the number at the top of the column or group that the atom is in, say...... francium is in column 1 and row 7. since it's in column 1 it has 1 valance electron. and since its in row 7 it has 7 levels of electrons.

Answer 2

In order to find the valance of an element, you must plot out the element's Protons/Atomic # using the Bohr Diagram. The number of protons on the outermost ring is your answer.

Answer 3

If Da vALeNcE ElEcTrOnS Is 1 2 3 AnD 4 DaN vAlEnCy iS AlSo 1 2 3 Or 4

If vAlEnCe eLeCtRoNs aRe 5 6 7 Or 8 ThAn vAlEnCy iS 8-VaLeNcE ElEcTRoNz

Answer 4

multiply add and subtract

Answer 5

b