Which of the following pairs of elements belong to the same group

A. H and He

B. Li and Be

C. C and Pb

D. Ga and Ge

1. What are the ways in which matter and energy can interact?

What is the primary way that metamorphic rocks form? A. Lava erupts from Earth and cools. B. Water, wind, and gravity move particles from one place to another. C. Rock fragments break apart and collect as sediment. D.

Suggest the position of titanium in the reactivity series of metals

Why is weather forecast so important for hang gliders need by 2:50 today

How is the sun classified

Is ammonia acidic or alkaline?

How would you prepare 50.0 ml of 0.600 m hno3 from a stock solution of 4.00 m hno3? what volume (in ml) of the 4.00 m hno3 solution will you need?

Which volcanoes are located on a diverging boundaries

What is the chemical formula for the chemical reaction that occurs when a bath bomb is placed in water?

Which is most likely why many scientists reject the cold fusion theory? There is too much waste involved in the process. Cold fusion experiments have been conducted at room temperature only.