Question:
The general formula of the compound formed when a metal (M) of group — 1 reacts with non-metal (x) of group — 16 is:
The general formula of the compound formed when a metal (M) of group — 1 reacts with non-metal (x) of group — 16 is:
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To find formulas of ionic compounds, use the valency of metal and non-metal and apply the crisscross method.
Updated On: Jun 26, 2026
- MX6
- M2X3
- MX2
- M2X
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The Correct Option is D
Solution and Explanation
Step 1: Identify valencies.
Group 1 metals have a valency of 1, and group 16 non-metals have a valency of 2.
Step 2: Use the valency method for formula.
The formula is determined by crisscrossing the valencies: \[ \text{Metal valency} = 1 \implies x_2, \quad \text{Non-metal valency} = 2 \implies M_2 \] So the compound formula is \(M_2X\).
Step 3: Conclusion.
The general formula of the compound is \[ \boxed{M_2X}. \]
Group 1 metals have a valency of 1, and group 16 non-metals have a valency of 2.
Step 2: Use the valency method for formula.
The formula is determined by crisscrossing the valencies: \[ \text{Metal valency} = 1 \implies x_2, \quad \text{Non-metal valency} = 2 \implies M_2 \] So the compound formula is \(M_2X\).
Step 3: Conclusion.
The general formula of the compound is \[ \boxed{M_2X}. \]
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