Give the correct answer to the following calculations: 8.34 x 10-6 + 3.020 x 10-4 =

ljjjljlj kjlk,ljym jlyu; jm; l mumytj

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

c. 4.54 x 10–12 j happens to be correct