1 ESMOND: Variant spelling of Middle English Estmond, meaning gracious protector.. 2  ESMUND: Variant spelling of Middle English Esmond, meaning gracious protector.. 3  ESTMOND: Variant spelling of Middle English Estmund, meaning gracious protector..
Mendeleev was the inventor of the periodic table. He organized all the known elements into the periodic table based on atomic number. He was also able to predict the existence â¦ of elements that had not yet been discovered based on gaps in the table he created.
1 In 1869, the Russian scientist Dmitri Mendeleev discovered a set of patterns in the properties of the elements. 2  He noticed that a pattern of properties appeared when he arranged the elements in order of increasing atomic mass. In the periodic table, the properties of the elements repeat in each period, or row, of the table. 2  Mendeleev left three blank spaces in the table. 3  He predicted that these spaces would be filled by elements that had not yet been discovered.