<span>Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.
</span>Mendeleev rewrote each edition of Principles of Chemistry<span>, including all new scientific data-particularly confirmations of the periodic law-and reanalyzing difficulties that had arisen to hinder its confirmation (inert gases, radioactivity, radioactive and </span>rare-earth elements<span>)
</span>he wanted to prove that he was right.
The seasons are caused as the earth, tilted on its axis, travels in a loop around the sun each year
It is a combustion reaction. C3H8 will react with oxygen to form carbon dioxide and water.
365 days.
Solar years is what we go by.
Answer: add 2 valence electrons
Explanation:
You have to make up for the negative electrons so you add them
