There are 27 4's in the number 28.
Wiki User
β 8y ago21 5s
In the Rb atom, the electron configuration is [Kr]5s^1. This means there is 1 electron in the 5s sublevel of the Rb atom.
16.
20
7
10
75
90
24
i think there are 18 digit 5s.
Exactly 33 of them
The answer would be 7,000