Question

What do these compounds have in common?

H2O
Cl2
NH3

A)
They are all ionic.
Eliminate
B)
They are all covalent.
C)
They all are positively charged.
D)
They all are negatively charged.

2. The electron configuration of an element is 1s22s22p63s23p64s1. Why is this a REPRESENTATIVE element?
A)
All orbitals are completely filled.
Eliminate
B)
The outermost electron is a valence electron.
C)
The outermost electron is added to the p-orbital.
D)
The highest s-orbital or p-orbital is partially filled.

Answer 1

Q1: They are all covalent molecules
Q2: The outermost electron is used for bonding, thus the answer is B

Answer 2

What do these compounds have in common?
H2O
Cl2
NH3


B)
They are all covalent.



2. The electron configuration of an element is 1s22s22p63s23p64s1. Why is this a REPRESENTATIVE element?


B)
The outermost electron is a valence electron.

Hope this answers the question. Have a nice day.