What is the chemical symbol for one element with an electron configuration that ends with np2 where n is ant principal quantum number?

The chemical symbol for the element with an electron configuration that ends with np², where n is the principal quantum number, is lead (Pb) when n = 6. In this case, the electron configuration would end with 6p². Another element with the same configuration for n = 5 is tin (Sn), with an electron configuration ending in 5p².