Can someone please quickly answer this question? Does it matter the order for an electronic configuration? So, like for the electronic configuration of Tin, can I either use [Kr]4d^105s^25p^2 or [Kr]5s^24d^1050^2

I’m just confused, when I look it up they show both so I don’t know which one is correct so I can use for my lab report?

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth