Why does electronegativity increase as you move through a period on the periodic table? less protons in the nucleus

The size of the atom increases

Electrons are held more tightly

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

What shape would a molecule with two bound groups and two lone pairs have?