Answer: E = - 19.611×
J
Explanation: The lowest possible energy can be calculated using the formula:

where:
Z is atomic number of the atom;
k is a constant which contains other constants and is 2.179×
J
n is a layer;
For the lowest possible, n=1.
Atom of Lithium has atomic number of Z=3
Substituing:

J
<u>The energy for the electron in the </u>
<u> ion is - 19.611 joules</u>
For the data set 1, 1, 2, 5, 6, 6, 9 the median is 5. For the data set 1, 1, 2, 6, 6, 9 the median is 4.
hope it helps you
Well actully the thunder is heard before the lightning because light travles faster than sound
Ability to move up through thin tunes because a physical property is something you can observe about the matter. Out of all of them this one does not fit.