1 Coordination compounds are complexes that consist of one or more central atoms or ions with one or more attached molecules. 2  The central atom is called a metal, and is a Lewis Acid; 3  The attached ions are ligands, and are Lewis Bases;  The total number of attachments between metal and ligands is the coordination number.
Stars are not scattered randomly through space, they are gathered together into vast groups known as galaxies. The Sun belongs to a galaxy called the Milky Way. Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also!
This varies extremely from galaxy to galaxy, from tiny galaxies with 10 million stars, to huge ones with 1000 billion stars. The average is somewhere between 100 and 1000 bi â¦ llions. An exact number is hard to give, as we don't even know the number of stars in our own galaxy (between 100 and 400 billions).And there are 170 billion galaxies in the observable universe, so counting the average number of stars could take a while.he estimate for the number of stars is about 100 billion stars-plus or minus 50 billion. 2 people found this useful. 1  Easy to Use Pregnancy Due Date Calculators When you are pregnant, the question on everyone's mind is when the baby is due.