The electron configurations of two unknown elements X and Y are shown. X: 1s22s22p63s1
Y: 1s22s1

Which statement is most likely correct about the two elements?

Type the letter that represents the correct location for each particle type below.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3