a. Draw the structural formula for a hydrogen molecule (H2) and an oxygen molecule (O2).
Remember that each line represents an electron pair being shared.
https://www.google.com/search?q=structural+formula+for+a+hydrogen+molecule+(H2)&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjzwKS8nrzXAhUC3IMKHUxBDagQsAQIZw&biw=1856&bih=908
But Ms.Sue there are so many different options, how do I know which is right?
There should be a drawing in your text.
To draw the structural formula for a hydrogen molecule (H2), follow these steps:
1. Start by placing two hydrogen atoms side by side. Each hydrogen atom has one electron.
H H
2. Hydrogen atoms need a total of two electrons, so draw a line between the two hydrogen atoms to represent the sharing of one electron pair.
H─H
3. This line represents the covalent bond between the hydrogen atoms, indicating that the two hydrogen atoms are sharing their electrons.
To draw the structural formula for an oxygen molecule (O2), follow similar steps:
1. Start by placing two oxygen atoms side by side. Each oxygen atom has six electrons.
O O
2. Oxygen atoms need a total of eight electrons, so draw two lines between the two oxygen atoms to represent the sharing of two electron pairs.
O═O
3. These lines represent the two covalent bonds between the oxygen atoms, indicating that the two oxygen atoms are sharing their electrons. The double bond in oxygen molecules is necessary to fulfill the octet rule, which states that atoms prefer to have eight electrons in their outermost electron shell.
Thus, the structural formula for a hydrogen molecule (H2) is H─H, and the structural formula for an oxygen molecule (O2) is O═O.