Home
Learn
Plan & Focus
Community
Pricing
Play & Compete
Free Resources

Log in Join Free

by JEE Master

Ask. Share. Learn. Grow Together. India's all-in-one community for JEE Main & JEE Advanced aspirants.

Explore

Learn
Plan & Focus
Community
Play & Compete
Free Resources

Resources

JEE Main PYQs
JEE Advanced PYQs
Formula Sheets
NCERT Mapping
Mock Analysis

Support

Help Center
Privacy Policy
Terms of Use
Contact Us

© 2026 PadhoNa. All rights reserved.

Formula Sheets / Chemistry

Chapter 12

p Block Elements (Group 13 and 14)

Revise with flashcards Download this chapter (PDF) All Chemistry formulas (PDF)

Group 13 Group 14

Group 13

Inert pair effect
stability of $+ 1$ rises down the group: Tl $^{+}$ more stable than Tl $^{3 +}$
BF $_{3}$ is a Lewis acid; diborane B $_{2}$ H $_{6}$ has two 3c–2e bridges
Borax bead
Na $_{2}$ B $_{4}$ O $_{7} \cdot 10$ H $_{2}$ O $Δ$ NaBO $_{2} +$ B $_{2}$ O $_{3}$

Group 14

catenation: C $≫$ Si $>$ Ge $\approx$ Sn $;$ +2 state stable for Pb
Silicates
basic unit SiO $_{4}^{4 -}$ (tetrahedral)

s Block Elements General Organic Chemistry