Is bef2 polar or nonpolar

The atomic number of chlorine is 17. Give the electron configuration for a neutral atom of chlorine

What types of properties change during a chemical reaction?

Which organism lived on Earth during the Paleozoic era? A. trilobite B. dinosaur C. pine tree D. octopus

Light travels extremely rapidly (c = 3.00*108 m/s). Suppose you had to travel 40 miles to work every day. If you traveled at the speed of light for the entire trip, how long would it take you to get to work (in seconds) ? [1 mile = 1.61 km]

Total number of electrons that can occupy the d sub level

When two elements form two different compounds, the masses of element B that combine with 1 g of element A can be expressed as a ratio of small whole numbers.

Which best identifies why the rusting of an iron nail in the presence of water and oxygen is in oxidation-reduction reaction

In the laboratory hydrogen gas is usually made by the following reaction:Zn (s) + 2HCl (aq) = H2 (g) + ZnCl2 (aq) How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mmHg and a temperture of 21 Co, can made from 3.

Whats the answer i need to know to get my paper done and if i don't get done i will fail chemistry.

3. Hydrogen cyanide (HCN) is a colorless gas. It is poisonous and smells like almonds. Draw a Lewis structure for this compound, explain why you drew the Lewis structure the way that you did, and predict the shape of the molecule