7. if the atomic number of an element is 6 and its mass number is 14, how many
neutrons are contained in the nucleus?
a 14
b 20
с
6
d8

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.

Answer ozone (o3) is made of three atoms of oxygen, it is a molecule;