The nucleus of an atom usually contains:

How many valence electrons are in a sulfur atom in the ground state?

What charge does an anion possess?

What is the correct name for the Cu 2+ ion?

Fluorine and fluorine will form a polar bond.

Physical properties include all the following except:

Soil is a homogeneous mixture.

A solution is a heterogeneous mixture.

A carbonated beverage is a heterogeneous mixture.

How many valence electrons are present in the element with the following ground state electron configuration?                                                                           1s2 2s2 2p3