Question

write the Aufau principal​

Answer 1

Answer:

hello mate!

Aufbau principal is the set of rules followed during filling of electrons in orbitals.

Explanation:

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Answer 2

$\rule{300}{2}$

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ᴛʜᴇ ᴡᴏʀᴅ 'ᴀᴜғʙᴀᴜ' ɪs ɢᴇʀᴍᴀɴ ᴍᴇᴀɴs 'ʙᴜɪʟᴅɪɴɢ ᴜᴘ'. ɪᴛ ғᴏʟʟᴏᴡs ᴛʜᴀᴛ ɪɴ ᴛʜᴇ ɢʀᴏᴜɴᴅ sᴛᴀᴛᴇ ᴏғ ᴛʜᴇ ᴀᴛᴏᴍ, ᴛʜᴇ ᴏʀʙɪᴛᴀʟs ᴀʀᴇ ғɪʟʟᴇᴅ ɪɴ ᴏʀᴅᴇʀ ᴏғ ᴛʜᴇɪʀ ɪɴᴄʀᴇᴀsɪɴɢ ᴇɴᴇʀɢɪᴇs.

ᴛʜᴇ ᴏʀᴅᴇʀ -

1s2s2ᴘ3s3ᴘ4s3ᴅ4ᴘ5s4ᴅ5ᴘ6s4ғ5ᴅ6ᴘ

7s5ғ6ᴅ7ᴅ8s.

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$\rule{300}{2}$