Select the best definition for wavelength. the rate at which electromagnetic waves oscillate the distance between two crests of an electromagnetic wave the height of an oscillating electromagnetic wave the oscillations of electric and magnetic fields Select the best definition for frequency. the rate at which electromagnetic waves oscillate the oscillations of electric and magnetic fields the distance between two crests of an electromagnetic wave the height of an oscillating electromagnetic wave

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l

the objects have the same charge.