1. Which two formulas contain 4 atoms of hydrogen? A. 2 H, CO3
B. H,02
C. C, H6
D. C, H,O2

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

98 ! and brainliest plz ! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

The boiling point of liquids is very high what does it indicate