why is it harder to remove an electron from fluorine than from carbon? to put it another way, why are the outermost electrons of fluorine more tightly held by the nucleus than those of carbon?

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

i believe the answer is true.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8