B: Al
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The first ionisation energy of potassium, K, is 418 kJ mol⁻¹. The first ionisation energy of strontium, Sr, is 548 kJ…
A student investigated the chloride of a Period 3 element. This is what the student wrote down as a record. "The comp…
Which statement about the first ionisation energies of magnesium and neon is correct?
How many structural isomers with the molecular formula C₄H₁₀O give infra-red absorptions both at approximately 1200 c…
Compound Q contains 40% carbon by mass. What could Q be? 1 glucose, C₆H₁₂O₆ 2 starch, (C₆H₁₀O₅)n 3 sucrose, C₁₂H₂₂O₁₁
A container is partially filled with hot water, sealed and left to cool. Which statements are correct? 1 As the tempe…