Which statement is true about effective nuclear charge? A) Effective nuclear charge decreases as you move to the left across a row in the periodic table.
B) Effective nuclear charge decreases then increases at regular intervals as you move to the left across a row in the periodic table.
C) Effective nuclear charge remains relatively constant as you move to the left across a row in the periodic table.
D) Effective nuclear charge increases as you move to the left across a row in the periodic table.