The word family implies that the elements in a family have like properties. what property do the elements of the noble gas family all share? a) they are not reactive. b) they are very reactive. c) they are found in the earth's atmosphere. d) they react readily with oxygen in the air.

A) They are not reactive

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom