Question

how many groups and periods are there in long form or modern periodic table​

Answer 1

Answer:

The long form of modern periodic table consists of seven rows called periods and eighteen columns called groups.

Answer 2

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⠀ɪɴ ᴛʜᴇ ᴩᴇʀɪᴏᴅɪᴄ ᴛᴀʙʟᴇ, ᴛʜᴇʀᴇ ᴀʀᴇ 7 ᴩᴇʀɪᴏᴅꜱ ᴀɴᴅ 18 ɢʀᴏᴜᴩꜱ.

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