बोरॉन
6
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बोरॉन (Boron) यह आवर्त सारणी के p-ब्लॉक के 13 वें वर्ग का प्रथम तत्व है। इसमें d- कक्षक अनुपस्थित होता है। इसके कारण इसकी अधिकतम संयोजकता 4 हो सकती है। इसी ...
Hamid Ali
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