Question

Element 2 is:
A) Cobalt
B)Chlorine
C)Calcium
D)Carbon

Answer 1

D: Carbon

Step-by-step explanation:

Carbon is the sixth element with a total of 6 electrons in the periodic table. Hence the atomic number Z = 6. The ground state electron configuration of carbon is 1s2 2s2 2p2. An excited state electron configuration of carbon is 1s2 2s1 2p3.