The primary reason for this was that Mendeleev
didn't know that atomic numbers actually existed. Atomic numbers
were only discovered a period after Mendeleev's time. The use of X-rays made it
possible to find the atomic number, and those had not been discovered yet. <span>
<span>The periodic table was then arranged in 1913 by Henry Moseley
in an arrangement according to atomic number.</span></span>
Release less energy than it uses
Answer:
I think the answer should be B. Number of valence electrons
Atomic mass of Sulfur = 32g
32g of Sulfur is one mole.
1g of Sulfur is 
96.21g of Sulfur is 
Adding a catalyst as this would speed up the reaction and the rest would slow it down
