Use the data above to determine the extinction coefficient (яБе) for a solution of X at a wavelength of 525.0 nm. Be sure to include units

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction

Which element below could be and isotope of this atom