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physical- the high thermal and electrical conductivity, lustre, ductility, and malleability
chemical-highly reactive at standard temperature and pressure
valence electrons- 1
ending electron configuration- s1
elements- lithium potassium and sodium
alkali metals
physical-silvery somewhat reactive metals at standard temperature and pressure.
chemical- low boiling points
valence electrons-2
physical-they are good conductors of heat and electricity.
they can be hammered or bent into shape easily.
chemical-are hard and have high densities;
have high melting and boiling points;
valence electrons-2
electrical configuration-3dn 4s2.
elements-iron, chromium, manganese
physical-color temp density
chemical-They all form acids when combined with hydrogen.
They are all fairly toxic.
valence electrons-7
elements-fluorine (F), chlorine (Cl), bromine (Br)
ending configuration- ns 2 np 5
physical-colorless, odorless, tasteless, and non-flammable
chemical-odorless, colorless, nonflammable, and monotonic gases
valence electrons-8
ending configuration-Ne]3s1.
elements-helium (He), neon (Ne), argon (Ar
physical-have large charge/radius ratio;
are hard and have high densities;
chemical-have high melting and boiling points;
form compounds which are often paramagnetic;
valence electrons-10-14
ending configuration-4f1-145d0-16s2
elements-cerium (Ce), praseodymium (Pr), neodymium (Nd)