Draw the Lewis dot structure of each molecule below. Which substance has two lone pairs in its Lewis dot structure?

a
CO2

b
H2O

c
CH4

d
NH3

What is the correct lewis structure for chloroform chcl3

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line