Chemistry · Periodic Classification of Elements
तत्वों के किस युग्म की संयोजकता (valency) समान है लेकिन परमाणु क्रमांक भिन्न हैं?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1नाइट्रोजन (Z = 7) और नियॉन (Z = 10)
- 2बेरिलियम (Z = 4) और नाइट्रोजन (Z = 7)
- 3कार्बन (Z = 6) और ऑक्सीजन (Z = 8)
- 4लिथियम (Z = 3) और सोडियम (Z = 11)✓
सही उत्तर देखें
लिथियम (Z = 3) और सोडियम (Z = 11)
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