Top 10 unbelievable historical concurrencies. A glucocorticoid is a type of steroid hormone which is produced in the cortex of the adrenal gland: cortisol is probably the most well known and common example of a glucocorticoid.
carbon is a special eleme having 4 electron in its outer shell so to complete its octect it needs to share its electron in a covalent bond. carbon is a special eleme having 4 electron in its outer shell so to complete its octect it needs to share its electron in a covalent bond.
Lewis proposed that an atom forms enough covalent bonds to form a full (or closed) outer electron shell. In the methane diagram shown here, the carbon atom has a valence of four and is, therefore, surrounded by eight electrons (the octet rule), four from the carbon itself and four from the hydrogens bonded to it. covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.