What is the best form for writing the hypthesis

I think the best way is persuasive. plz forgive me if this is wrong or not the answer that was expected

the correct answer is answer a. a mixture

no other options make sense

hope this

have a great day : )

  - sprinkles

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.