Hydrogen and s-Block Elements (Class 11 — ~20% weight)
Position of hydrogen, alkali and alkaline earth metals, diagonal relationships.
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Take a full mock →Q1 · Hydrogen and s-Block Elements (Class 11 — ~20% weight) · EASY
Which of the following properties shows a diagonal relationship between lithium and magnesium?
Q2 · Hydrogen and s-Block Elements (Class 11 — ~20% weight) · MEDIUM
When sodium reacts with excess oxygen, it primarily forms sodium peroxide. What is the oxidation state of oxygen in sodium peroxide (Na2O2)?
Q3 · Hydrogen and s-Block Elements (Class 11 — ~20% weight) · HARD
Calcium oxide (CaO) reacts vigorously with water to form calcium hydroxide. If 5.6 g of CaO is completely reacted with water, what volume of hydrogen gas at STP would be produced if the calcium hydroxide formed then reacts with 2.3 g of sodium metal? (Atomic masses: Ca = 40, O = 16, Na = 23, H = 1)
Q4 · Hydrogen and s-Block Elements (Class 11 — ~20% weight) · EASY
Which of the following alkali metals reacts most vigorously with cold water?