Used to predict the shapes of p-block molecules based on electron pair repulsion. Quick Summary Table Valence Electrons Common Oxidation State Alkali Metals ns1n s to the first power Alkaline Earth ns2n s squared Carbon Group ns2np2n s squared n p squared ns2np5n s squared n p to the fifth power
electron shells, leading to predictable trends in reactivity, bonding, and geometry. 1. Periodic Trends (The Foundation)
Main Group Chemistry: A Primer Main group chemistry focuses on the (Groups 1 and 2) and p-block (Groups 13–18) elements . Unlike transition metals, these elements primarily involve the filling of
Famous for electron deficiency. Boron forms unique "cluster" compounds (boranes) that challenge standard bonding rules.
Elements like Lithium and Magnesium share similar properties because their charge-to-size ratios are almost identical.
Decreases across a period (increasing nuclear charge pulls electrons closer) and increases down a group.
The ability to attract electrons. Fluorine is the king here. 2. The s-Block (Groups 1 & 2)
Main Group Chemistry, (tutorial Chemistry Texts) Apr 2026
Used to predict the shapes of p-block molecules based on electron pair repulsion. Quick Summary Table Valence Electrons Common Oxidation State Alkali Metals ns1n s to the first power Alkaline Earth ns2n s squared Carbon Group ns2np2n s squared n p squared ns2np5n s squared n p to the fifth power
electron shells, leading to predictable trends in reactivity, bonding, and geometry. 1. Periodic Trends (The Foundation) MAIN GROUP CHEMISTRY, (Tutorial Chemistry Texts)
Main Group Chemistry: A Primer Main group chemistry focuses on the (Groups 1 and 2) and p-block (Groups 13–18) elements . Unlike transition metals, these elements primarily involve the filling of Used to predict the shapes of p-block molecules
Famous for electron deficiency. Boron forms unique "cluster" compounds (boranes) that challenge standard bonding rules. Periodic Trends (The Foundation) Main Group Chemistry: A
Elements like Lithium and Magnesium share similar properties because their charge-to-size ratios are almost identical.
Decreases across a period (increasing nuclear charge pulls electrons closer) and increases down a group.
The ability to attract electrons. Fluorine is the king here. 2. The s-Block (Groups 1 & 2)