NCERT Class XI Chemistry Classification of Elements and Periodicity in Properties Solutions

Question : 34

Total: 40

Which of the following statements related to the modern periodic table is incorrect?

The p-block has 6 columns, because a maximum of 6 electrons can occupy all the orbitals in a p-shell.
The d-block has 8 columns, because a maximum of 8 electrons can occupy all the orbitals in a d-subshell.
Each block contains a number of columns equal to the number of electrons that can occupy that subshell.
The block indicates value of azimuthal quantum number (l) forthe last subshell that received electrons in building up the electronic configuration.

Solution:

(b) : The d-block has 10 columns, because a maximum of 10 electrons can occupy all the orbitals in a d-subshell.

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