1. Which is the smallest/lightest element labeled above? 2. Name the three elements shown above that are nonmetals.
3. Which element is in the alkali metal family?
4. Which element is in the halogen family?
5. What number period are elements D, E, F, and G in?
6. What is the largest/heaviest element labeled above?
7. Which two elements would fall within the transition metals group?
8. Which element is in the noble gases family?
9. If element F had an atomic number of 22, what would be the atomic number of G?
a. What would be the atomic number of element E?

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.

it's filtration, but this is an assumption so my apologies if i got this

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.