FA-Introduction to Periodic Table

who discovered the first scientific and systematic periodic table

• Henry Mosley

• Dmitri Mendeleev

• John Dalton

• sir Isaac Newton

Which one is correct about mendeleev's periodic law

• Properties of elements are periodic function of their atomic mass

• the physical and chemical properties of elements are periodic function of their atomic number.

• physical properties of elements are periodic function of their atomic weight.

• chemical properties of elements are periodic function of their atomic number.

choose the correct statement

• the vertical column in the periodic table is called period

• the vertical column in the periodic table is called group

• the horizontal row in the periodic table is not called period

• none of the above

how many groups are there in modern periodic table

• 8

• 9

• 18

• 17

Number of valence electrons in Group VIIA is

• 1

• 4

• 3

• 7

D block elements are known as .............

• Actinides

• Transition elements

• Lanthanides

• Noble gases

how many electrons can d orbital accommodate? (keep)

• 2

• 6

• 10

• 14

choose the metalloid element

• Alumunium

• Germanium

• Silver

• Helium

Tags

NGSS.HS-PS1-1

Sulphur is........

• Non metal

• Metal

• Metalloid

• Inert gases

Tags

NGSS.HS-PS1-1

What is the valency of Krypton

• 0

• 1

• 2

• 3

Tags

NGSS.HS-PS1-1