प्रश्न क्र 7-वर्ग 2 में कितने तत्व हैं उनके नाम लिखिए।
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Answer:
helium and lithium
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HELLO DEAR,
क) वर्ग 2 में कितने तत्व हैं उनके नाम लिखिए
There are 6 element in group II.
Group II Atomic no. Name of
elements
Be 4. Beryllium
Mg. 12. Magnesium
Ca. 20. Calcium
Sr. 38. Strontium
Ba. 56. Barium
Ra. 88. Radium
I HOPE IT'S HELP YOU DEAR,
THANKS.
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