What element has 4 energy levels and 1 valence electron

Hydrogen and helium, both in the first period, have their valence electrons in the principal energy level n=1.

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Explanation:

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.