Amain group metal was studied and found to exhibit the following properties:
a. it does not occur free in nature.
b. it loses valence electrons readily.
c. it reacts readily with the halogens, oxygen, and nitrogen.
d. it is produced by high-temperature reduction of its oxide.
e. it reacts vigorously with water.
which of the following metals might have been the element studied?

we learned this not to long ago i think its a,c

Explanation:

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.