Ms. Daly had Hydrogen gas that was cooled from 100°C to -50.5 °C. The new volume was 20. L. What was its original volume? O 50.
O 24
34 L
20.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

the answer is b & c i believe : )

they are made of gases.

they have a spherical shape.

they make energy through fusion.