18. For each of the excited state electron configurations given below, identify the corresponding element and then provide two more possible excited state configurations. a) 1s 22s 12p 2 b) 1s 22s 22p 2 3s 23p 1c) 1s 22p 2

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.