ILL GIVE BRAINLIST How many valence electrons does boron gain when it becomes an anion?

A. 2

B. 3

C. 4

D. 5

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

What happens when light is scattered?

Once similarity and one difference between a mixture of elements and a mixture of compounds