Which is most likely to form a negative ion?

A. An element from group 17

B. A metal

C. An element from group 1

D. An element with atoms that have eight valence electrons

A

Explanation:

In other options, they form positive ion as they have extra electrons in their valence shell

But in group 17, all the elements have 7 electrons in their valence shell,inorder to attain octet they require one more electron

Hence,they form negative ion by gaining electron

c. 75.7

i think that is the right