There is a bankrupt iridium company in the United States, which originally planned to launch 77 satellites to realize global satellite communication. What is its company name and the number of satelli

There is a bankrupt iridium company in the United States, which originally planned to launch 77 satellites to realize global satellite communication. What is its company name and the number of satellite launch plans? A. According to the information provided by iridium in the periodic table, it is known that there are 77 electrons outside the iridium nucleus, so A is correct;

B. The types of chemical elements can be distinguished according to the radicals of Chinese characters, and the names of metal elements generally have the word "gold" next to them; Iridium is a metal element, so B is wrong;

C. According to the data, the relative atomic mass of iridium is 192, so c is wrong;

The relative atomic mass of d iridium is 192, so d is wrong;

So choose a.