Which of the following happens when an ionic bond is formed? A. One atom pulls an electron from another atom.

B. Two atoms attain equal electronegativities.

C. One atom becomes more electronegative than another atom.

D. Two atoms share an electron.

I'll say A & C because the non-metals usually becomes a negative ion, by gaining extra electrons from the metal - so, the metal becomes a positive ion instead.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !