a. atom
b. element
c. ion
d. matter
e. molecule
neon is an inert gas, found in the last column of the periodic table. this is a model depicting the smallest particle of neon. review the prompt. what statements also describe this model?
a) a and b
b) a and d
c) a, b, and d
d) a, b, d and e

A, B, and D

Explanation:

This is an atom of the element, neon. An atom is the smallest particle of matter. An ion is an atom of an element that has gained or lost one or more electrons. A molecule represents two or more atoms covalently combined.

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.