Can someone pls check !!​

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols