Which of the following statement is correct in regard to the classification of elements?
(a) Elements in the modern periodic table are arranged on the basis of increasing atomic numbers
(b) Elements in Mendeleev’s periodic table are arranged on the basis of increasing atomic numbers
(c) In the modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
(d) In the modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.
Which of the following statement is correct in regard to the classification of elements?
(a) Elements in the modern periodic table are arranged on the basis of increasing atomic numbers
(b) Elements in Mendeleev’s periodic table are arranged on the basis of increasing atomic numbers
(c) In the modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
(d) In the modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.
(d) In the modern periodic table, the isotopes of chlorine, having different atomic masses are kept in the same group.
The isotopes of chlorine, having different atomic masses but same atomic numbers are kept in the same group in the modern periodic table.
(d) In the modern periodic table, the isotopes of chlorine, having different atomic masses are kept in the same group.
The isotopes of chlorine, having different atomic masses but same atomic numbers are kept in the same group in the modern periodic table.
