The charge of a Strontium atom that has 10 electrons is ...

The charge of a Strontium atom that has 10 electrons is 4.48 × 10⁻¹⁸ C

Explanation:

The atomic number of Strontium is 38

The electronic configuration of Strontium is given as follows;

1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶5s²

The atomic number of Strontium is 38 electrons in orbit and 38 protons in its nucleus and is electronically neutral

38e⁻ + 38e⁺ = 0

When there are only 10 electrons in an atom of Strontium, we have;

10e⁻ + 38e⁺ = +28e

The charge of a Strontium atom that has 10 electrons is +28e

+28e = 28×1.6×10⁻¹⁹ C = 4.48 × 10⁻¹⁸ C

The charge of a Strontium atom that has 10 electrons is +28e or 4.48 × 10⁻¹⁸ C.

h

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.