The first electron configuration quantum number describes
a. the energy level.
b. the type of orbital (s, p,d, or f).
c. the spin of each electron.
d. the number of electrons in the orbital.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

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.