A sample with a molar mass of 34.00 g/mol is found to consist of 0.44g H and 6.92g 0. What is the empirical formula of the compound?

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.

i just learnt this recently but i need to look through my notes again

a polar bond is formed when electrons are shared unevenly between atoms