Answer:
The answer to your question is: D) 8
Explanation:
We can know the valence of an element if we know in which is located.
For example if an element is in group IA it would have 1 valence electron,
if an element is located in group IIIA it would have 3 valence electrons, if an element is located in group VIIA, it would have 7 valence electron and so on.
Neon is located in group VIIIA, so it would have 8 valence electrons.
False each one has its own unique in its own way
The heat of vaporization is =924.71 j/g
<em><u>explanation</u></em>
<u><em> </em></u>Heat of vaporization is amount of heat require to vaporize 1 gram of a substance.
Heat of vaporization required is therefore=8720 joules/9.43 grams=924.71 j/g