Any element in the period of alkile earth metal cuz O has a valence electron of 6 and the alkile earth metals have V.E. of 2 which completes the octet rule...making it covalently bond to form a 2 atom molecule ex: Lewis structure Be:O
c) more particles collide with the walls of the container
Explanation:
More moles means more particles. If the volume remains the same, the collisions of more particles with the container walls cause the pressure to increase.