Which atom has a larger atomic radius, S or Cl ?Why?

How many unpaired electrons are present in an atom with 32 electrons?

Which is larger, an atom or its positive ion and why?

this question has two parts A and B. Part A: How does atomic radius change going down the group and why? Decreases because there are less energy levels decreases because the nucleus is stronger Increases because more energy levels are being added down the group Increases because the nucleus is weaker Part B: How does atomic radius change moving across the period? Increases because there are more energy levels Increases because the nucleus is less efficient (weaker) Decreases because the nucleus is stronger and more efficient Decreases because there are less energy levels