Given the equation: 12(s) → 12(g)

Which phrase describes this change?

क

1.

endothermic chemical change

2.

endothermic physical change

3.

exothermic chemical change

4.

exothermic physical change

How air particles exert a pressure on the inside of the balloon

Will mark brainliest how many electrons can be held in the energy level n = 4?

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.