Question

Use the periodic table to identify the element indicated by each electron configuration by typing in the

chemical symbol for the element.
1s22s22p6:
1s22s22p63s23p3:
1s22s22p53s23p54s1:
1s22s22p53s23p64s2308:
1s?2s?2p53s23p54s23d104p65s24d3:

Answer 1

1s22s22p6: Neon (Ne)

1s22s22p63s23p3: Phosphorous (P)

1s22s22p63s23p64s1: Potassium (K)

1s22s22p63s23p64s2(im not sure what 308 is supposed to be): Calcium (Ca)

1s22s22p63s23p64s23d104p65s24d3: there is no pure element that ends 4d3 that I know of so this can either be Zirconium(Zr) if it ends in 4d2 or Niobium (Nb) if it ends in 4d4

Step-by-step explanation:

you can look at the periodic table and the trends to find the rough idea of where the electron configuration ends, there are helpful articles and images on these, i attached an image that may help. After that you can look at the atomic number to find the number of electrons for a pure element and use the electron subshell pattern thing to find the exact number