Attempts of element classification

the scientist who made the first periodic table is ......

• moseley

• Rutherford

• Bohr

• mandeleev

mandeleeve arranged the elements in according to ..........

• the atomic weight

• the atomic number

• atomic number and the way of filling energy sublevels

the scientist who discovered the presence of protons in the nucleous is ......

• moseley

• Rutherford

• mandeleev

• Bohr

the horizontal row in the periodic table is called .............

Bohr named the number of protons as ................

moseley specified a place below the table for ................... and ...............

the scientist who said that the atom has seven main energy levels is ...........

• Rutherford

• Moseley

• Bohr

• Mandeleev

the modern periodic table has .............. groups and ......... periods.

s-block has ............ groups while p-block has......... groups.

d-block elements are called ..........................