Which of the following is true about covalent bonding? Up to 8 electrons can be donated from one element to another
Electrons are donated from the outer shell
Electrons are shared in pairs
All of the above
None of the above

Electrons are shared in pairs!

Explanation:

I'm doing learning about  Covalent Bonding too:)  

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.