Question

which of the following best explains why atomic radius decreases left to right across a period? a electrons are being removed from the atom, so the number of orbitals is decreasing b protons are added to the nucleus, and the force of attraction on electrons is stronger c electrons are added, and they are repelled by the protons d electrons are added, and they are attracted to other electrons e protons are added to the nucleus, and the force of attraction on electrons is weaker

Explanation:

As we move from left - to - right across a period, the atomic number increases, meaning more protons are added to the nucleus. The electrons are added to the same energy level. The increased positive charge in the nucleus exerts a stronger pull on the electrons, drawing them closer to the nucleus and thus decreasing the atomic radius.

Answer:

B. Protons are added to the nucleus, and the force of attraction on electrons is stronger