Chemistry · Classification of Elements and Periodicity in Properties
परमाणु क्रमांकों का कौन-सा युग्म s-ब्लॉक के तत्वों को दर्शाता है?
- 119, 56✓
- 212, 15
- 322, 55
- 47, 19
सही उत्तर देखें
19, 56
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