Are the bonds in each of the following substances ionic, nonpolar covalent, or polar covalent? (a)kcl (b)p4 (c)bf3 (d)so2 (e)br2 (f)no2 for those substances with polar covalent bonds, which has the least polar bond? for those substances with polar covalent bonds, which has the most polar bond?
the correct answer is a liter.
the si or the international system of units illustrates seven measuring units as a fundamental set from which all the other si units can be obtained. the si base units and their physical quantities are the kilogram for mass, the meter for measurement of length, the ampere for electric current, the second for time, the candela for luminous intensity, the kelvin for temperature, and the mole for the amount of substance.
in general oxidation is defined as gain of oxygen or loss of electron or hydrogen by an atom. reduction is defined as gain of electron or hydrogen or loss of oxygen by an atom.
in a balanced redox reaction we have two half reactions
a) reduction half reaction : the oxidation number of element decreases
b) oxidation half reaction : the oxidation number of element increases
the element undergoing reduction is pd.
the oxidation number of pd decreases from +2 to 0
thus the reduction half reaction will be
the pd (ii) ion will take two electrons and will give pd (0)