Chemistry, asked by sou86, 10 months ago

How many vertical columns are there in the modern periodic table and what are they called? ​

Answers

Answered by rupanjanasaha04
2

Answer:

18 groups

Explanation:

Answered by nk7003361
2

Answer:

their is 7 vertical columns and these are called 7 periods

mark it's brainliest please

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