P Block element Class 12 Important Chemistry Questions with Answers for Board Exams.
The p-block elements are a set of chemical elements in the periodic table that are characterized by having their valence electrons (outermost electrons) in the p orbital of the outermost energy shell.
Here are the key facts about them:
Location: They are found in Groups 13 through 18 of the periodic table (excluding Helium, which is an s-block element despite being in Group 18).
Diversity: The p-block is the only block that contains all three types of elements:
Non-metals (e.g., Carbon, Oxygen, Nitrogen, Halogens, Noble Gases)
Metalloids (e.g., Boron, Silicon, Germanium, Arsenic, Tellurium)
Metals (e.g., Aluminum, Tin, Lead, Bismuth)
Properties: They exhibit a wide range of properties:
They generally have higher electronegativity and ionization energy compared to s-block elements.
They commonly form covalent compounds.
Many of them show variable oxidation states.
The non-metallic character increases from left to right across a period and decreases down a group.
Examples of p-block elements and their families:
Group 13 (Boron family): Boron , Aluminum ,Gallium
Group 14 (Carbon family): Carbon, Silicon, Tin
Group 15 (Nitrogen family/Pnictogens): Nitrogen , Phosphorus , Bismuth
Group 16 (Oxygen family/Chalcogens): Oxygen , Sulfur , Selenium
Group 17 (Halogens): Fluorine , Chlorine , Iodine
Group 18 (Noble Gases): Neon , Argon , Xenon
