Which is the atomic number of an atom with six valence electrons

How does sea floor spreading work?

When Rutherford's coworkers bombarded gold foil with a particles, they obtained results that overturned the existing (Thomson) model of the atom. Explain.

The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is represented by the symbol shown below?

In a lab, 2.20 L of gas is collected over water at a temperature of 30 degrees C and a total pressure of 735.43 mmHg. Find the volume that the dry nitrogen of gas would occupy at STP.

The gases carbon dioxide, oxygen, and argon are mixed in a container. All gases have the same partial pressure, and the total pressure of the container is 32,680 Pa. What is the partial pressure of argon?

The big bang is through to have started by an?

What is the word equation for KNO3 = KNO2 + O2

Which of the following is true of mixtures? A) a mixture is a combination of two or more substances in which each substance retains its own properties B) A mixture is composed of a single pure substance C) A mixture must contain multiple compounds

Identify the main source of energy used by most organisms

Write a net ionic equation to show that codeine, c18h21o3n, behaves as a bronsted-lowry base in water.