The conversation between human and AI assistant.
Why doesnt shielding effect affect the trend of decreasing atomic size along a period?
Interesting. How do these factors affect the size of an atom?
Generally, an atom with more energy levels will be larger than an atom with fewer energy levels. Similarly, an atom with more electrons in its outermost energy level will be larger than an atom with fewer electrons in that level. The arrangement of the electrons in the orbitals also plays a role, as some electron configurations can cause the electrons to be more tightly bound to the nucleus than others.