Compare Tool
Two or three elements, side by side — bars and reasons together.
What it is
Pick any two elements — or three — and the compare tool sets them side by side with at-a-glance bars for atomic radius, electronegativity, ionisation energy, atomic weight, period and group. A plain-language note explains the position reasoning: why one sits higher or further along, and what that means chemically. forty ready-made ‘X vs Y’ pages — Sodium vs Potassium and its cousins — arrive with key-difference tables already laid out, so the classic exam comparisons are one tap away rather than one setup away.
Why it helps you study
‘Compare X with Y’ is a beloved NCTB question shape, and side-by-side bars are how the answer wants to be seen. When potassium’s bars stand taller than sodium’s, the reason for its bigger radius stops being a rule to recite and becomes something you have watched. The ready-made pages cover the pairings teachers actually ask about, and the plain-language position notes train you to explain differences in full sentences — exactly what the marker rewards.
How to use it
- Open the compare tool and pick your first element.
- Add a second element — and a third if the question needs one.
- Read the bars for radius, electronegativity, ionisation energy, weight, period and group.
- Study the position note, or open a ready-made page like Sodium vs Potassium.
Questions students ask
Can I compare three elements at once?
Yes — the tool accepts two or three elements, so triangle questions like lithium, sodium and potassium together can be answered on one screen.
What are the ready-made comparison pages?
Forty pre-built ‘X vs Y’ pages, such as Sodium vs Potassium, each opening with a key-difference table of the kind examiners love to ask.