B. When electrons gain energy, they have the power to move up to a higher energy level in an atom.
When two fluorine atoms bond together in f2 the type of covalent bond do they form is non-polar covalent bond.
Explanation
They are two type of covalent bond. that is non polar covalent bond and polar covalent bond.
Non polar covalent bond is formed when atoms share a pair of electrons with each other equally.
polar covalent bond is bond formed when atoms share a pair electrons unequally.
F2 is a non polar since it is made up of two same atoms which has the same electronegativity, therefore equal number of electrons exist in the orbital overlap.
