The number of valence electrons in Group 2 elements is
A.0
B.1
C.3
D.2.

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

How does the viscosity of magma change as magma cools?

Which of the following words describe the reality that the universe looks the same from various perspective