Identify which location in the periodic table you would have the
largest atomic radii.

left to right across a period when it decreases and when it increases top to bottom in a group,

hope i helped

output?

explanation:

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