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characteristics of mendeleve's periodic table in points ?
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Answer:
According to Mendeleev’s Periodic Law “The Physical and Chemical Properties of the elements are the periodic functions of their atomic weights.”
In Mendeleev periodic table, vertical columns in the periodic table and horizontal row in the periodic table were named as groups and period respectively.
The periodic table is composed of seven horizontal rows or periods and is numbered between 1 and 7.
There is a regular gradation in the properties of elements in the horizontal rows(periods) from left to right.
The periodic table is composed of eight vertical columns or groups. They ‘re numbered between 1 to 8.
If the element is similar but not much, to distinguish between them it is placed below and slightly away from it. Thus, each column will have two sub-columns A and B, so elements will show more similarity in the same sub-columns.
Drawbacks of Mendeleev’s Periodic Table:
a. Concerns about the position of hydrogen.
b. No place for the isotopes of elements in the periodic table.
c. The placement of element having greater atomic mass before the elements having lower atomic mass could not be logically explained.
Answer:
heyy.........
1) In Mendeleev periodic table, vertical columns in the periodic table and horizontal row in the periodic table were named as groups and period respectively.
2) The periodic table is composed of seven horizontal rows or periods and is numbered between 1 and 7.
3) There is a regular gradation in the properties of elements in the horizontal rows(periods) from left to right.
4) The periodic table is composed of eight vertical columns or groups. They ‘re numbered between 1 to 8.
5) If the element is similar but not much, to distinguish between them it is placed below and slightly away from it. Thus, each column will have two sub-columns A and B, so elements will show more similarity in the same sub-columns.
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