Question

as you move left to right across the periodic table valence electrons feel a stronger attractive force from the nucleus, this is because... the electrons are in higher energy levels the nucleus has more protons rewatch

Explanation:

As you move left - to - right across a period in the periodic table, the atomic number increases. This means the number of protons in the nucleus increases. Protons are positively charged and electrons are negatively charged. A greater number of protons in the nucleus results in a stronger positive charge, which exerts a stronger attractive force on the valence electrons.

Answer:

the nucleus has more protons