Question

How many groups and periods are there for mendeleev's periodic table?????​

Answer 1

at at that time period must be not classified in mendel's table but there were 8 group which ment for normal elements

means it's table was not available up to the calcium or atomic number 20

Answer 2

Answer:

there were 8 grps and 6 periods in Mendelivs Periodic Table.

Explanation:

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