Question

1. Which of the fallowing factor disproved that atoms of the same element
are alike in mass? Give reason
a. isotopes
b. cathode rays
c. anode rays
d. atomic number​

Answer 1

ᴅʀᴀᴡʙᴀᴄᴋs ᴏғ ᴅᴀʟᴛᴏɴ's ᴀᴛᴏᴍɪᴄ ᴛʜᴇᴏʀʏ

ᴛʜᴇ ɪɴᴅɪᴠɪsɪʙɪʟɪᴛʏ ᴏғ ᴀɴ ᴀᴛᴏᴍ ᴡᴀs ᴘʀᴏᴠᴇᴅ ᴡʀᴏɴɢ: ᴀɴ ᴀᴛᴏᴍ ᴄᴀɴ ʙᴇ ғᴜʀᴛʜᴇʀ sᴜʙᴅɪᴠɪᴅᴇᴅ ɪɴᴛᴏ ᴘʀᴏᴛᴏɴs, ɴᴇᴜᴛʀᴏɴs ᴀɴᴅ ᴇʟᴇᴄᴛʀᴏɴs. ʜᴏᴡᴇᴠᴇʀ ᴀɴ ᴀᴛᴏᴍ ɪs ᴛʜᴇ sᴍᴀʟʟᴇsᴛ ᴘᴀʀᴛɪᴄʟᴇ ᴛʜᴀᴛ ᴛᴀᴋᴇs ᴘᴀʀᴛ ɪɴ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴs. ᴀᴄᴄᴏʀᴅɪɴɢ ᴛᴏ ᴅᴀʟᴛᴏɴ, ᴛʜᴇ ᴀᴛᴏᴍs ᴏғ sᴀᴍᴇ ᴇʟᴇᴍᴇɴᴛ ᴀʀᴇ sɪᴍɪʟᴀʀ ɪɴ ᴀʟʟ ʀᴇsᴘᴇᴄᴛs.

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