Question

Elements whose outer configuration vary from ns2 np1 to ns2 np6 constitute. a) s block b) p block c) d block d) f block ​

Answer 1

Option B (p-block) is the correct answer.

• The electronic configuration of an element is defined as the distribution of electrons in an atom. It is also defined as a symbolic notation of an element following a particular order.
• Generally, the last electron enters into the same shell number as the block number. For Example, an element in the s-block has its last electron in the s-subshell.
• If an element belongs to the p-block then the general configuration is ns2 np1-6. If an element belongs to d-block then the general electronic configuration is  (n-1)d 1-10 ns1-2.
• If the element belongs to the f-block then the general its general configuration (n-2)f 1-14 (n-1)d 1-10 ns2.
• The given electronic configuration varies from ns2 np1 to ns2 np6. Hence the element belongs to the p-block. The element can either belong to group 13, group 14, group 15, group 16, or group 17.

Therefore, the elements belong to the p-block. Option B is the correct answer.