Which type of bond occurs when atoms complete their outermost electron shells by sharing electrons?
O ionic
O covalent
hydrogen
O van der Waals

b. covalent

Explanation:

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.