Question

what were the criteria used by mandeleev in creating his periodic table? ​

Answer 1

Answer:

CRITERIA USED BY MENDEELV IN CREATING HIS PERIODIC TABLE.

Explanation:

1) Properties of an element are periodic function of their atomic masses.

2) In this there are seven periods and eight groups. Out of 8 groups, 7 are of normal elements and one of transition elements.

3) He left some gaps in his table for unknown element.

4) He thought that when these elements would discover later on they can be placed on table without disturbing other elements.

*ANSWER COMPLETED,

*BEST OF LUCK.

Answer 2

ᴛʜᴇ ᴄʀɪᴛᴇʀɪᴏɴ ᴜsᴇᴅ ʙʏ ᴍᴇɴᴅᴇʟᴇᴇᴠ ᴡᴀs ᴛʜᴇ ᴀᴛᴏᴍɪᴄ ᴍᴀss . ʜᴇ ᴀʀʀᴀɴɢᴇᴅ ᴛʜᴇ ᴇʟᴇᴍᴇɴᴛs ɪɴ ᴛʜᴇ ɪɴᴄʀᴇᴀsɪɴɢ ᴏʀᴅᴇʀ ᴏғ ᴛʜᴇɪʀ ᴀᴛᴏᴍɪᴄ ᴍᴀss ᴀɴᴅ ʜᴇɴᴄᴇ ᴘʀᴏᴅᴜᴄᴇᴅ ᴀ ᴘᴇʀɪᴏᴅɪᴄ ᴛᴀʙʟᴇ . ᴇʟᴇᴍᴇɴᴛs ᴡɪᴛʜ sɪᴍɪʟᴀʀ ᴄʜᴇᴍɪᴄᴀʟ ᴘʀᴏᴘᴇʀᴛɪᴇs ᴡᴇʀᴇ ᴘʟᴀᴄᴇᴅ ɪɴ ᴀ ɢʀᴏᴜᴘ.