Question

advantage and disadvantage of Henry moseleys

Answer 1

Mendeleev could never figure out the correct position of Hydrogen in his table. Since hydrogen can either gain or lose an electron it can find a place in Group 1 or 17. Its electronic configuration resembles that of alkali metals. Although it can also combine with metals and non-metals forming covalent bonds like Halogens.

Mendeleev could never figure out the correct position of Hydrogen in his table. Since hydrogen can either gain or lose an electron it can find a place in Group 1 or 17. Its electronic configuration resembles that of alkali metals. Although it can also combine with metals and non-metals forming covalent bonds like Halogens.But in the modern periodic table, there is no dilemma. Since the Atomic Number of hydrogen is 1 that is where it finds its appropriate place at the start of the table.