Answer:
heyy do you got the answer? i got that cuestion but i need the answer!!! did you finally get it?
Explanation:
Anion means negatively charged ion.
Among Ar, K, Al and O, only O forms anion.
Hope this helps!
1) He was born on February 8, 1834
2) He was born in Tobolsk, Russia
3) Mendeleev arranged the elements in order of increasing relative atomic mass.
4) Gallium, germanium, and scandium
5) He died on February 2, 1907
6) Protons (positive charge) and neutrons (neutral charge)
I’m not sure but I’m sure it’s b please thank me