Choose the electron configurations which are impossible for an unexcited atom. Example 1 – 1s22s22p4

Example 2 – 1s22s22p63s23p33d1

Example 3 – 1s22s22p83s1

Example 4 – 1s22s22p63s1

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4