Fr points :)
why not ?!?!

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

C3h8o3 - glycerol major species present when dissolved in water

In which of these cases are the two wave points considered to be in phase with each other?