What elements make something organic?

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.

What must happen before a body cell can begin mitotic cell division

Explain what happens at the saturation point when adding salt to water at room temperature.