Plz answer 21 qutions :( dont spam :( (π^π})
Answers
Explanation:
1) In mandaleev's periodic table, the elements are arranged according to their increasing atomic masses. This is a limitation.
The first limitation was rectified by arranging the elements with increasing atomic numbers.
2) In mandaleev's periodic table, there are only 8 groups.
The second limitation was rectified by increasing groups to 18.
3) In mandaleev's periodic table, grouping of dis-similar elements took place.
The above limitation was rectified by grouping elements with their matching chemical properties.
4) In mandaleev's periodic table, seperation of chemically dis-similar elements took place.
The above limitation was rectified by arranging chemically similar elements in same group.
Answer:
gussa mat ho yaar....waise battameez log bohot saare hai yaha, joh aisi gandi baate baat karte hai.....accha theek tumhare hi naam se ek mod hai....kya woh tum ho?
Explanation:
agar ha toh......koyi baat nahi..XD
agar naa toh bhi koyi baat nahi....XD
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