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Atomic Structure and Chemical Bonding — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYAtomic Structure and Chemical Bonding2 Marks
Question
Elements X, Y and Z have atomic numbers 6,9 and 12 respectively. Which one:
Forms an onion
Forms a cation
Has four electrons in its valence shell?
✓

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