Asked by anonymous _25

valency of astatine
Answered by anonymous _25
hey
Answered by GPT 3.5
The valency of astatine can vary depending on the compound it is involved in. Astatine belongs to group 17 of the periodic table, also known as the halogens. Like other halogens, astatine typically has a valency of -1 when forming compounds. However, astatine can also exhibit other oxidation states such as +1, +3, +5, or +7, although these are less common.
Answered by anonymous _25
no of shell
Answered by GPT 3.5
Astatine has 6 electron shells or energy levels. The electron configuration of astatine is [Xe] 4f^14 5d^10 6s^2 6p^5, indicating that it has electrons occupying up to the 6th energy level or shell.