1. Tardigrade
  2. Question
  3. Chemistry
  4. Fill in the blanks by picking the correct option. There are groups and periods in the extended form of periodic table. The group, all members of which are in gaseous state under ordinary conditions is group. Most electropositive elements belong to group.

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Q. Fill in the blanks by picking the correct option. There are __________ groups and __________ periods in the extended form of periodic table. The group, all members of which are in gaseous state under ordinary conditions is __________ group. Most electropositive elements belong to __________ group.

Classification of Elements and Periodicity in Properties

Solution:

There are $18$ groups and $7$ periods in the periodic table. The group, all members of which are in the gaseous state under ordinary conditions is $18^{\text {th}}$ group. Most electropositive elements belong to $1^{\text {st}}$ group.