Boron Family (Group 13) — Periodic Table Mnemonic
Target: mnemonic for boron family group 13 elements
Why is this hard to memorize?
Group 13 — the Boron family — is a favourite topic in NEET and JEE because of the fascinating anomalous behaviour of Boron compared to Aluminium. You need to memorize Boron, Aluminium, Gallium, Indium, and Thallium in order, plus know that Boron is a metalloid while the rest are metals. Questions often test diagonal relationships (B with Si), electron-deficient compounds like BF₃, and the inert pair effect in Thallium. Getting the order right is the first step — a strong mnemonic ensures you never confuse Gallium with Germanium or mix up Indium with Iridium under exam pressure.
Classic mnemonics you should know
"B A G I T (Bagit — like "bag it")"
B → Boron, Al(A) → Aluminium, Ga(G) → Gallium, In(I) → Indium, Tl(T) → Thallium. Say "Bag It!" — as if you are bagging the five elements.
"Boys Always Get Into Trouble"
B(Boys) → Boron, Al(Always) → Aluminium, Ga(Get) → Gallium, In(Into) → Indium, Tl(Trouble) → Thallium. Relatable and fun to say aloud.
"Boring Aliens Gallop In Tallahassee"
B(Boring) → Boron, Al(Aliens) → Aluminium, Ga(Gallop) → Gallium, In(In) → Indium, Tl(Tallahassee) → Thallium. Picture aliens riding horses through Florida.
The complete list
- Boron (B)
- Aluminium (Al)
- Gallium (Ga)
- Indium (In)
- Thallium (Tl)
Frequently asked questions
What is the easiest mnemonic for Group 13 elements?
"B A G I T" or "Bag It!" is the shortest and most popular. Each letter maps to one element: B → Boron, A → Aluminium, G → Gallium, I → Indium, T → Thallium.
Why is Boron different from the other Group 13 elements?
Boron is a metalloid with very high ionization energy and small size. It forms covalent compounds (not ionic), has a diagonal relationship with Silicon, and its trihalides like BF₃ are electron-deficient Lewis acids — unlike AlCl₃ which forms dimers.
What is the inert pair effect in Group 13?
As you go down Group 13, the +1 oxidation state becomes more stable relative to +3. Thallium preferentially forms Tl⁺ (not Tl³⁺) because the 6s² electrons are reluctant to participate in bonding — this is the inert pair effect. NEET and JEE frequently ask about this.
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