BR: Lesson 4.5 (A) - Kristina Thibodeaux | Biblioteka

1

The oxidation number of halogens is

+1

-1

+7

-7

1

alkali metals

transition metals

halogens

noble gases

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The energy needed to remove an electron.

The ability to attract electrons.

The size of an atom.

How much protection valence electrons are provided by core electrons.

1

1

the effective nuclear charge.

shielding.

number of valence electrons.