Question

Which of the following statement is correct in regard to the classification of elements?
1----In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group
2------In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass
3-----Elements in modern periodic table are arranged on the basis of increasing atomic masses
4-------Elements in Mendeleev's periodic table are arranged on the basis of increasing atomic numbers

Answer 1

Answer:

1. True

2. True

3.True

i didn't get the 4th one. sorry

hope the other answers helped u

Answer 2

Answer:

1. True
2. True
3. True
4. False

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