1. Melting and boiling point increase as the atomic number increases.
Hey guys!
Just wanted to let you know, like the other user commented, C <u>is</u> the correct answer!
Answer: d.) The element is named after the Latin word for calcium.
Explanation:
They all form in great clouds of gas and dust, they begin life with same chemical composition as the Sun: about 3/4 hydrogen and 1/4 helium and no more than 2% consisting of elements heavier than helium. They DIFFER in size, age brightness, and temperature.