Asample of 0.300 mg pure chromium was added to excess hydrochloric acid to form a 10.0 ml aqueous solution of a chromium (iii) salt, which has a violet hue. exactly 1.00 ml of the resulting solution was analyzed using a spectrophotometer in a 1.00-cm cell at 575 nm, and the percent transmittance for the solution was 62.5%. what is the extinction coefficient?

a) time for salt to dissolve.

this factor depends on the other steps mentioned to dissolve the salt.

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answer: [ar]4s1

explanation: potassium is an element with atomic number 19, thus it contains 19 electrons. it is   a metal which readily loses its electrons to acquire stable configuration of argon which has 18 electrons with completely filled subshells.