Answer:
a.the smallest building blocks of matter
Explanation:
because atoms are the smallest building blocks of matter.
I read and said it's a weak base
It is actually a Colloid, which means it will never mix and settle.<span />
Using the method chromatography
<span>Nitrogen trifluoride - NF3.
1 mol NF3 contains 1 mol atoms of Nitrogen
2.49 mol NF3 contains 2.49 mol atoms of Nitrogen
1 mol ---- 6.02 *10²³ atoms
2.49 mol ----- 2.49*6.02*10²³ = 15.0*10²³ atoms of N</span>