Which element has a complete valence electron shell? a selenium (Se)

b oxygen (O)

c fluorine (F)

d argon (Ar)

WILL GIVE FIRST AWNSER

Ascientist is tracking an object orbiting the sun that is found between mars and jupiter. in order to classify the object as an asteroid, it must be at least

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2