Formula Of Ions

Question 1

How many electrons does each group loose/gain and there ion charge.

Answer 1

Group 1 - looses 1 electron (1+)
Group 2- looses 2 electrons (2+)
Group 3 - looses 3 electrons (3+)

Group 5 - gains 3 electrons (3-)
Group 6 - gains 2 electrons (2-)
Group 7 - gains 1 electron (1-)

Question 2

Formula of nitrate (polyatomic ion)

Answer 2

No3-

Question 3

Formula of hydroxide (polyatomic ion)

Answer 3

OH-

Question 4

Formula of carbonate (polyatomic ion)

Answer 4

Co 2-
3

Question 5

Formula of sulfate (polyatomic ion)

Answer 5

SO 2-
4

Question 6

Formula of ammonium (polyatomic ion)

Answer 6

NH4+