Fill in the blank. Particles in a metal are held together by attractions.

covalent

Explanation:

The bonds that hold atoms together to form molecules are called covalent bonds. They are pretty tough and not easily made or broken apart. It takes energy to make the bonds and energy is released when the bonds are broken. Trees take light and use it to make bonds between carbon atoms and molecules of cellulose.

it's c. elements are placed in rows based on how may valencies electrons have.

thats a little if u want the answer just look it up on google thats what i do haha : )