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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Answer:18,7,last group,first group
Explanation:
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Answer:
There are 18 groups and 7 periods in the extended form of the periodic table.
The group, all members of which are in the gaseous state under ordinary conditions is 18 group.
Most electropositive elements belong to 1 group.
Explanation:
- The long form of the periodic table consists of 18 vertical columns called groups and 7 horizontal rows called periods.
- The group where all the members are in the gaseous state under ordinary conditions is group 18 (noble gases).
- The electropositive metals belong to group I (alkali metals).
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