The number of d-electrons in fe2+ (z = 26) is not equal to that of a. p-electrons in ne(z = 10) b. s-electrons in mg(z = 12) c. d-electrons in fe(z = 26) d. p-electrons in ci(z = 17)

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

What state of matter is ice a. liquid b. element c. solid d. gas

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles