What element is 1s22s22p63s23p64s23d104p65s1

Rubidium

Explanation:

Add the exponents: 2+2+6+2+6+2+10+6+1=37

Look for the atomic number 37

2+2+6+2+6+2+10+6+1=37

which is the atomic number of rubidium(Rb)

i think its 100

i hope this !