Question

Identify each element below, and give the symbols of the other elements in its group:

(a) [He] 2s²2p²
(b) [Ar] 4s²3d³
(c) [Ne] 3s²3p³

Answer 1

Answer in explanation

Step-by-step explanation:

a. Carbon, atomic number 6

Helium has 2 electrons. We add this to the other 4 to make 6

Other group elements: Silicon Si, Germanium Ge , Tin Sn , lead Pb , Flerovium Fl

b. Vanadium, atomic number 23

Argon has 18 electrons, we add 5 to the 18 to make 23

Other group members are: Niobium Nb, Tantalum Ta , Dubnium Db

c. Phosphorus, atomic number 15

Neon has atomic number of 10

Other group members are: Nitrogen N , Phosphorus P , Arsenic As , Antimony Sb , Bismuth Bi and Moscovium Mc