Periodic Table

How many groups are present in the modern periodic table?

• 8

• 10

• 15

• 18

How many periods are present in the modern periodic table?

• 7

• 12

• 10

• 8

How many elements are present in the seventh period?

• 2

• 8

• 32

• 18

Elements of a period show properties :

• same

• different

• none of these

How many blocks are present in modern periodic table?

• 5

• 6

• 2

• 4

The elements of group one and two are placed in which block?

• p block

• s block

• d block

• f block

Lanthanides belong to which period?

• 5th

• 4th

• 6th

• 7th

Elements of group one are called:

• Alkali metals

• alkaline earth metals

• transition metals

• Halogens

When we move from left to right in a period atomic number:

• decreases

• first increases then decreases

• increases

• none of these

How many electrons are present in the valence shell of group 1 elements?

• 8

• 5

• 2

• 1