Question

hi there! can anyone help me with this? :)

Arrange the following elements in order of increasing atomic size, and explain how you know the order: Ca, Rb, S, Si, Ge, F. Do not simply state the trends but rather explain why the trend exists

Answer 1

Rb, Ca, Ge, Si, S, F.

Answer 2

With Rb being the largest.

Answer 3

This is because as you go across a row there is a larger +ve charge from the nucleus, causing the electrons to be pulled tighter together.

Going down a column, size increases. This is because there are electrons in higher energy shells which are effectively shielded by the lower energy electrons.

Hence Ce is the largest (bottom left-nearly) and He is the smallest (top right)

Answer 4

Feel free to give me a medal if you found this helpful.

Answer 5

thanks so much i will!!