Write the noble gas abbreviation for the following: a) 3, 1, -1, -1/2

b) atom with five electrons in the 3rd energy level

c) gallium

d) potassium

e) 3, 1, 0, -1/2

(Thanks!)

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

6.4 cm (max) - 25 cm (min)