What do we call the bond that forms when atoms share two pairs of electrons (I have a test tomorrow and I'm doing a review right now but have no idea what the answer to this is.)

The modern periodic table has groups.

4. absorption has the highest risk of overdose due to increased potency. a. rectal b. oral c. transdermal d. intranasal

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line