Which one of the following elements does not exist as a diatomic molecule in nature?
(a) hydrogen
(b) nitrogen
(c) fluorine
(d) neon

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

What are the two largest greenhouse gases

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.