p-Block Elements NEET Cheat Sheet: Everything You Need

What NEET Asks

• Identify elements belonging to the p-block based on electronic configuration.
• Understand general trends in metallic/non-metallic character and oxidation states.
• Basic questions on general properties of groups 13-18.
• Typically 1-2 questions from p-block, often concept-based.

Key Points

• p-Block elements: Last electron enters a p-orbital of the outermost shell.
• General Electronic Configuration: $ns^2 np^{1-6}$.
• Comprises groups 13 (Boron family) to 18 (Noble gases).
• Exhibit a wide variation in properties: from non-metals to metalloids to metals.
• Metallic character increases down a group and non-metallic character increases across a period.
• Oxidation states vary, often showing group oxidation state and (group oxidation state - 2) due to inert pair effect in heavier elements.

Must-Know Formula / Reaction

General Outer Electronic Configuration of p-block: $ns^2 np^{1-6}$

• $n$: Principal quantum number of the outermost shell.
• $s$: s-orbital (filled with 2 electrons).
• $p$: p-orbital (filling with 1 to 6 electrons).

Common Mistakes

• Students often confuse the block identification based on the last electron entering, especially for Helium.
• Don't forget the inert pair effect reduces stability of higher oxidation states for heavier elements.
• Misinterpreting trends in metallic/non-metallic character across and down groups.

Rapid Revision

p-block elements span groups 13-18 with $ns^2 np^{1-6}$ configuration. They show diverse properties from non-metals to metals. Remember general trends and the inert pair effect influences oxidation states for heavier elements. Helium, though $1s^2$, is placed in p-block due to properties.