Do H, K, Rb, Fr, have the same number of valence electrons or same number of energy levels

Same number of valance electrons

Explanation:

All of them are in group 1 so they have 1 valance electron.

If they were in same period they would have same number of energy levels.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

the correct answer would be d. hope this !