Answer:
a. Nitrogen = 28
b. Flourine = 38
c. Chlorine = 70.9
d. Iodine = 253.8
Step-by-step explanation:
a. Nitrogen
Atomic mass is 14
Molar mass is 14 x 2 = 28
b. Flourine
Atomic mass is 19
Molar mass is 19 x 2 = 38
c. Chlorine
Atomic mass is 35.45
Molar mass is 35.45 x 2 = 70.9
d. Iodine
Atomic mass is 126.9
Molar mass is 126.9 x 2 = 253.8