MCQ

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Enthalpy of formation of two compounds $x$  and $y$ are $-84\, kJ $ and $-156 \,kJ$ respectively. Which of the following statements is correct

• A
  $x$ is more stable than $y$
• ✓
  $x$ is less stable than $y$
• C
  Both $x$  and $y$ are unstable
• D
  $x$  and $y$  are endothermic compounds