Which two elements on the periodic table have the same number of electron shells?
Potassium (K #19) and Strontium (Sr #38)
Radon (Rn #86) and Cesium (Cs #55)
Fluorine (F #9) and Sodium (Na #11)
Sulfur (S #16) and Oxygen (O #8)
Potassium (K #19) and Strontium (Sr #38)
Radon (Rn #86) and Cesium (Cs #55)
Fluorine (F #9) and Sodium (Na #11)
Sulfur (S #16) and Oxygen (O #8)