Answer:metres
Explanation:It would be best to measure the length of an object in metric system such as millimeter, centimeter, mere etc..
<span>Atomic Number 10 is Neon.
1s: 2
2s: 2
2p: 6
3s: 0
3p: 0
4s: 0
3d: 0
4p: 0
5s: 0</span>
Well the width is 0.20 meters. Since there are a hundred centimeters in a meter, we just have to move the decimal point two times to the right to get a 20 centimeter width.