5. How many groups are there in a periodic table?
(a) 13
(b) 15
(c) 17
(d) 18
Answers
Answered by
1
Answer:
18 group s are there in the periodi table
Answered by
0
Answer:
(d) 18
Explanation:
According to modern periodicals table there are 18 group elements. .periodic table is categorised as 4 blocks s ,p, d, f block. .
The first 2 groups comes under s block elements n the right side of periodic table that is frm boron to noble gases ,it is p block elements not in b/n s and p block elements its d block and lanthanides not actinides are f block elements.
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