BRES Which term describes this reaction?
H
H
C=C
H
H
CH2
"CH2
CH2CH2
CH2
CH2 CH2
CH2
"CHI
CH2
CH2
"
CH2
CH2
"CHI
o elimination

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

the awnser is group 12

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.