poLortiffanygailey
Answered

1.As you move from left to right across a period,the number of valence electrons

-increases

-stays the same

-increases and then decreases

-decreases


2.Compared with group 2A elements, group 64 elements have

-more atoms in the ground state

-more valence electrons

-more isotopes

-fewer valance electrons


3.which of the following group 7A elements is the most reactive?

-CI(chlorine

-I(iodine)

-F(fluorine)

-Br(bromine)

Verified Answer :

Dracula419
  1. it increases then decreases i.e +1, +2, +3, +4, +5, -2, -1 then 0.
    2. group 6 elements have more valence electrons than group 2.
    3.fluorine is the most reactive because reactivity and electronegativity reduces down the group.

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