Question

ExPlain Me_________

no SpaM​

Answer 1

Answer:

In the modern periodic table, elements are arranged in order of their increasing atomic numbers. ... Elements are arranged in order of their increasing atomic numbers. The vertical columns are known as groups and horizontal columns are known as periods; in the modern periodic table.

Explanation:

hope it will help you

Answer 2

$\huge\fbox\red{A}\fbox\purple{n}\huge\fbox\green{s}\fbox\orange{w}\huge\fbox\pink{e}\fbox\blue{r}$

❥❥Tʜᴇ Mᴏᴅᴇʀɴ Pᴇʀɪᴏᴅɪᴄ Tᴀʙʟᴇ ᴄᴏɴsɪsᴛs ᴏғ 18 ᴠᴇʀᴛɪᴄᴀʟ ᴄᴏʟᴜᴍɴs ᴛᴇʀᴍᴇᴅ ᴀs 'ɢʀᴏᴜᴘs'. Iᴛ ᴀʟsᴏ ᴄᴏɴsɪsᴛs ᴏғ 7 ʜᴏʀɪᴢᴏɴᴛᴀʟ ʀᴏᴡs ᴛᴇʀᴍᴇᴅ ᴀs 'ᴘᴇʀɪᴏᴅs'. Tʜᴇ ᴇʟᴇᴍᴇɴᴛs ᴘʀᴇsᴇɴᴛ ɪɴ ᴀɴʏ ᴏɴᴇ ɢʀᴏᴜᴘ ʜᴀᴠᴇ ᴛʜᴇ sᴀᴍᴇ ɴᴜᴍʙᴇʀ ᴏғ ᴠᴀʟᴇɴᴄᴇ ᴇʟᴇᴄᴛʀᴏɴs. Fᴏʀ ɪɴsᴛᴀɴᴄᴇ, ᴇʟᴇᴍᴇɴᴛs ʟɪᴋᴇ ғʟᴜᴏʀɪɴᴇ (F) ᴀɴᴅ ᴄʜʟᴏʀɪɴᴇ (Cʟ), ʙᴇʟᴏɴɢ ᴛᴏ ɢʀᴏᴜᴘ 17.

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