Why are the elements in group 4 unlikely to lose all of the electrons in the outer energy level?

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Which of the following molecules is polar? c3h7oh c2h5cooh

What are fossils of organisms that existed over a wide area but only for a limited time period called?