4. Use electronegativity difference to determine if the elements below will form nonpolar covalent bonds, polar covalent bonds or ionic bonds. Show your work.
a. ithium and chlorine
d. Nitrogen and Oxygen
b. Oxygen and Phosphorus
e. Nitrogen and Sulfur
C. Germanium and chlorine
f. Nitrogen and Potassium

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

c. orbital shape i hope this is correct