A10g mass of krypton occupies 15.0 l at avpressure of 210 kpa. find the volume

From Boyle's law, we can use the equation
     P1V1 = P2V2
to find the volume when the pressure is increased to 760 kPa:      
     V2 = P1V1 / P2      
     V2 = (210 kPa)(15.0 L) / 760 kPa      
     V2 = 4.14 Liters 
Therefore, the volume is 3.99 Liters after the pressure increased to 760 kPa.  

But if the pressure is increased to 790 kPa, the volume of the krypton will decrease to      
     V2 = P1V1 / P2
     V2 = (210 kPa)(15.0 L) / 790 kPa      
     V2 = 3.99 Liters  

Order of filling levels and sublevels of electrons: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²3f¹⁴5d¹⁰6p⁶for an element with 5 electrons in the 3d energy level: full configuration: 1s²2s²2p⁶3s²3p³.