Which element will gain one electron in an ionic bond? Select one:
a. Al
b. Cu
c. Br
d. O

C. Bromine

Explanation:In ionic bond , the metals looses electron and the non metal gains electron.

In the given options ;

Aluminum (Al)= METAL

Copper (Cu) = METAL

Bromine (Br) = NON METAL

Oxygen (O) = NON METAL

That leaves us with bromine and oxygen.

Oxygen has an electronic configuration of 2,6.(see image).

So oxygen needs to gain two electrons.

Bromine has one valence electron ( see image).

So therefore , Bromine needs to gain one electron as It is in Group VII

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.