two atoms of the same element that are covalently bonded are shared pairs or bonding pairs.
two atoms of the same element that are covalently bonded are shared pairs or bonding pairs.
two atoms of the same element that are covalently bonded?
shared pairs or bonding pairs
Na
Na
lead is a soft metal (mh 1.5, but hardens close to melting) which, in many cases, is unable to support its own weight. it has a close-packed structure (bcn 12) but an abnormally large inter-atomic distance that has been attributed to partial ionisation of the lead atoms. it forms a semi-covalent dioxide pbo; a covalently bonded sulfide pbs; covalently bonded halides; and a range of covalently bonded organolead compounds such as the lead(ii) mercaptan pb(sch), lead tetra-acetate pb(chco), and the once common, anti-knock additive, tetra-ethyl lead (chch)pb. the oxide of lead in its preferred oxidation state (pbo; +2) is amphoteric; it forms anionic plumbates in strongly basic solutions. lead forms zintl phases such as cspb, srpb, lapbn and ybpb. it has reasonable to good corrosion resistance; in moist air it forms a mixed gray coating of oxide, carbonate and sulfate that hinders further oxidation.
post-transition metal