Which combination of elements is most likely to form a covalent bond? a. sodium and calcium b. sodium and argon c. calcium and oxygen d. nitrogen and oxygen ​

i don’t know what the answer is i wish i

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

i think its c if i'm wrong

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y