Question

what is the Atomic Number?​

Answer 1

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The atomic number or proton number of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus.

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Answer 2

Tʜᴇ ᴀᴛᴏᴍɪᴄ ɴᴜᴍʙᴇʀ ᴏʀ ᴘʀᴏᴛᴏɴ ɴᴜᴍʙᴇʀ (sʏᴍʙᴏʟ Z ) ᴏғ ᴀ ᴄʜᴇᴍɪᴄᴀʟ ᴇʟᴇᴍᴇɴᴛ ɪs ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏғ ᴘʀᴏᴛᴏɴs ғᴏᴜɴᴅ ɪɴ ᴛʜᴇ ɴᴜᴄʟᴇᴜs ᴏғ ᴇᴠᴇʀʏ ᴀᴛᴏᴍ ᴏғ ᴛʜᴀᴛ ᴇʟᴇᴍᴇɴᴛ. Tʜᴇ ᴀᴛᴏᴍɪᴄ ɴᴜᴍʙᴇʀ ᴜɴɪϙᴜᴇʟʏ ɪᴅᴇɴᴛɪғɪᴇs ᴀ ᴄʜᴇᴍɪᴄᴀʟ ᴇʟᴇᴍᴇɴᴛ. Iᴛ ɪs ɪᴅᴇɴᴛɪᴄᴀʟ ᴛᴏ ᴛʜᴇ ᴄʜᴀʀɢᴇ ɴᴜᴍʙᴇʀ ᴏғ ᴛʜᴇ ɴᴜᴄʟᴇᴜs.