Question

the modern classification of elements is based on the descovery of
​

Answer 1

(ᴀ) Tʜᴇ ᴘʀᴏᴘᴇʀᴛɪᴇs ᴏғ ᴇʟᴇᴍᴇɴᴛs ᴀʀᴇ ᴀ ᴘᴇʀɪᴏᴅɪᴄ ғᴜɴᴄᴛɪᴏɴ ᴏғ ᴛʜᴇɪʀ ᴀᴛᴏᴍɪᴄ ᴍᴀssᴇs. Iᴛ ᴡᴀs ᴛʜᴇ ᴅɪsᴄᴏᴠᴇʀʏ ᴏғ ᴀᴛᴏᴍɪᴄ ɴᴜᴍʙᴇʀ ᴡʜɪᴄʜ ʟᴇᴅ ᴛᴏ ᴀ ᴄʜᴀɴɢᴇ ɪɴ Mᴇɴᴅᴇʟᴇᴇᴠ's ᴘᴇʀɪᴏᴅɪᴄ ʟᴀᴡ ᴡʜɪᴄʜ ᴡᴀs ʙᴀsᴇᴅ ᴏɴ ᴀᴛᴏᴍɪᴄ ᴍᴀss. (ʙ) Tʜᴇ ᴇʟᴇᴍᴇɴᴛs ʜᴀᴠɪɴɢ sɪᴍɪʟᴀʀ ᴄʜᴇᴍɪᴄᴀʟ ᴘʀᴏᴘᴇʀᴛɪᴇs ғᴏʀᴍ ᴏxɪᴅᴇs ᴀɴᴅ ʜʏᴅʀɪᴅᴇs ʜᴀᴠɪɴɢ sɪᴍɪʟᴀʀ ғᴏʀᴍᴜʟᴀᴇ.

Hᴏᴘᴇ ɪᴛ ʜᴇʟᴘs.....

Mᴀʀᴋ ᴍᴇ ᴀs ʙʀᴀɪɴʟɪᴇsᴛ ❤❤

Answer 2

Answer:

Henery Moseley

Explanation:

the the modern classification of element is based on discovery of Henery Moseley