Write the configurations for the highest occupied energy level for each of the following elements.
a. He
b. K
c. Al

Plz help

Find the protons, electrons and neutrons for strontium with a mass of 83

Calculate: select the worksheet tab. this tab you calculate the analyte concentration.  fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.)  record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes.  record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons