Given this balanced equation: 2 BiS2 + 6 O2 -> 1 Bi2O4 + 4 SO2

If you want to make 25.57 moles of SO2 , how many mole of O2 would you need?

Answer value

answer; ///(d) the correct answer is double or triple

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.