why does carbon form compounds mainly by covalent bonding
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It cannot lose 4 electrons as it involves a lot of energy. Also, it cannot gain 4 electrons because the nucleus cannot hold on to the four extra electrons added. Therefore, to complete the octet, it shares 4 electrons with other atoms. That is why, carbon forms compounds mainly by covalent bonding..
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Carbon has 4 electrons in its outermost shell and requires 4 more electrons to attain a noble gas electronic configuration. ... So, carbonachieves a noble gas electronic configuration only by sharing its 4 valence electrons with other elements. Thus, it forms compounds mainly by covalent bonds.
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