For isoelectronic ions, how are effective nuclear charge and ionic radius related?

How do you work out 21.3-8= show your working. plz

The different layers of gases that extend form the surface of the earth into space

Which situation is the best example of opportunity cost? a country chooses to produce bananas instead of wheat. a country chooses to invest in manufacturing and agriculture. a country chooses to specialize in producing paper products. a country chooses to export all of its products.