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In the modern periodic table, the period indicates the value of:-
(a) Atomic number
(b) Atomic mass
(c) Principal quantum number
(d) Azimuthal quantum number.
What is the basic difference in approach between the Mendeleev’s Periodic Law and the Modern Periodic Law?
Which of the following statements related to the modern periodic table is incorrect?
(a) The p-block has 6 columns, because a maximum of 6 electrons can occupy all the orbitals in a p-shell.
(b) The d-block has 8 columns, because a maximum of 8 electrons can occupy all the orbitals in a d-subshell.
(c) Each block contains a number of columns equal to the number of electrons that can occupy that subshell.
(d) The block indicates value of azimuthal quantum number (l ) for the last subshell that received electrons in building up the electronic configuration.
On the basis of quantum numbers, justify that the sixth period of the periodic table should have 32 elements.
- All in One Chemistry CBSE Class 11