A) Compare Na and Cs. Which atom is bigger. Justify your answer in 1-2 sentences. B) Compare K and Ca. Which atom has the bigger ionization energy. Justify your answer in 1-2 sentences.

C) Compare C and Ge. Which atom has the bigger electron affinity. Justify your answer in 1-2 sentences.

a police officer and a ambulance

i think it is d. e because the next one is igneous.

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.