Attempts of element classification.

I made the first periodic table

• Mendeleev

• Moseley

• Bohr

• Rutherford

I discovered that the nucleus of the atom contains positively charged proton

• Mendeleev

• Bohr

• Rutherford

• Moseley

I discovered that the elements are classified in an ascending order according to their atomic number

• Mendeleev

• Moseley

• Rutherford

• Bohr

arranging the elements in an ascending order accoring to their atomic weight is the main principle for

• Mendeleev's periodic table

• Moseley's periodic table

• Modern periodic table

• all of the above

He added the Zero group which include inert gas

• Moseley

• Bohr

• Rutherford

• Mendeleev