Question
Question: Fill in the blanks by picking the correct option. There are \_\_\_\_\_\_\_ groups and \_\_\_\_\_ pe...
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.
A
16, 8, 17, 2
B
18, 7, 18, 1
C
8, 7, 0, 2
D
16, 8, 18, 1
Answer
18, 7, 18, 1
Explanation
Solution
: There are 18 groups and 7 periods in periodic table. All members of 18th group are noble gases and first group contains alkali metals which are the most electropositive.