When oxygen bonds to itself to form breathable oxygen gas what kind of bond is involved?
a. ionic
b. covalent
c. oxygenated
d. non-metallic

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

What shape would a molecule with two bound groups and two lone pairs have?

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.