Use the periodic table to determine the electron configuration for Br and Y in noble-gas notation. Br:

[He]2s22p63s23p5

[Ne]3s23p4

[Ar]4s24p5

[Ne]3s23p5

Y:

[Xe]5s25d1

[Kr]5s24d1

[Kr]5s24d2

[Ar]4s23d104p65s25d1

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Which factor is likely to impact the possible number of compounds ?