An ion with a charge of 3 would most likely be an element in group
a.1
b.16
c.18
d.132. an element in group 2 would most likely form what kind of bond?
a. covalent
b. ionic
c. polar covalent
d. hydrogen3. when an ion with a charge of 2 gains two electrons, it no longer is an ion.
a. true
b. false

One is b, through the logic that group one can only lose or gain one electron and group 18 which is the noble gases and 132 doesn't make sense.
number two is ionic because they are metals who usually form bonds with non metals, covalent bonds are nonmetals and nonmetal bonding.
for three if the charge is a positive then yes because the atom then becomes neutral. True.

B
B
A

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

(no3)⁻n has oxidation number x,o has oxidation number -2.(x*1 -2*3) charge of the nitrate ion, and we know that charge of the nitrate ion =-1.so,(x*1 -2*3) =-1x-6=-1x=+5answer a. +5.