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Atoms, Molecules and Radicals — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYAtoms, Molecules and Radicals1 Mark
MCQ
Which of the following exhibit variable valency ?
  • A
    calcium
  • ✓
    copper
  • C
    carbon
  • D
    chlorine
✓

Answer

Correct option: B.
copper
copper

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