For the following, round off each number to three significant digits, and then express it in scientific notation. 1) 3.478
2) 65.345
3) 4444
4) 3.1416
5) 55555
6) 45.35455

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

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