Question

short note on discovery of electron class 11th​

Answer 1

J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup."

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Answer 2

Dɪsᴄᴏᴠᴇʀʏ ᴏғ ᴇʟᴇᴄᴛʀᴏɴ ᴡᴀs ᴅᴏɴᴇ ʙʏ J.J Tʜᴏᴍsᴏɴ ɪɴ ʜɪs ᴄᴀᴛʜᴏᴅᴇ ʀᴀʏ ᴇxᴘᴇʀɪᴍᴇɴᴛ. Iɴ ᴛʜɪs ᴇxᴘᴇʀɪᴍᴇɴᴛ ʜᴇ ʜᴀᴅ ᴛᴀᴋᴇɴ ᴀ ᴅɪsᴄʜᴀʀɢᴇᴅ ɢʟᴀss ᴛᴜʙᴇ ᴀɴᴅ ᴄᴏɴɴᴇᴄᴛᴇᴅ ᴛᴡᴏ ᴛᴇʀᴍɪɴᴀʟ ᴏɴ ʙᴏᴛʜ ᴛʜᴇ ᴇɴᴅ ᴏғ ᴛʜᴀᴛ ᴛᴜʙᴇ ᴛʜᴇɴ ᴡɪᴛʜ ᴛʜᴇ ʜᴇʟᴘ ᴏғ ᴠᴀᴄᴜᴜᴍ ᴘᴜᴍᴘ ʜᴇ ᴄʀᴇᴀᴛᴇᴅ ᴠᴀᴄᴜᴜᴍ ɪɴ ᴛʜᴀᴛ ᴛᴜʙᴇ ᴀғᴛᴇʀ ᴛʜᴀᴛ ʜᴇ ʜᴀᴅ ᴘᴀssᴇᴅ ʜɪɢʜ ᴠᴏʟᴛᴀɢᴇ

Hᴇ ᴏʙsᴇʀᴠᴇᴅ ᴛʜᴀᴛ ᴛʜᴇʀᴇ ᴡᴇʀᴇ sᴏᴍᴇ ʀᴀʏs ᴡʜɪᴄʜ ᴡᴇʀᴇ ᴛʀᴀᴠᴇʟɪɴɢ ғʀᴏᴍ ᴄᴀᴛʜᴏᴅᴇ ᴛᴏ ᴀɴᴏᴅᴇ ᴡʜɪᴄʜ ᴍᴇᴀɴs ᴛʜᴀᴛ ᴛʜᴏsᴇ Rᴀʏs ᴡᴇʀᴇ ᴛʀᴀᴠᴇʟɪɴɢ ғʀᴏᴍ ɴᴇɢᴀᴛɪᴠᴇ ᴛᴇʀᴍɪɴᴀʟ ᴛᴏ ᴘᴏsɪᴛɪᴠᴇ ᴛᴇʀᴍɪɴᴀʟ sᴏ ʜᴇ ᴄᴏɴᴄʟᴜᴅᴇᴅ ᴛʜᴀᴛ ᴛʜᴏsᴇ ʀᴀʏs ᴡᴇʀᴇ ᴄᴏɴsɪsᴛ ᴏғ ɴᴇɢᴀᴛɪᴠᴇ ᴘᴀʀᴛɪᴄʟᴇs ᴡʜɪᴄʜ ʜᴇ ɴᴀᴍᴇᴅ ᴀs ELECTRON

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