What is the mass number of an atom that has 12 neutrons and 11 protons?

Describe how molecules form from individual elements. How and why can we predict which molecules will form?

What happens to the rate of evaporation of a liquid as the liquid is cooled?

what is the percent composition in chloric acid (HClO3) ?

The atomic number of Zn2 + gives us the information about

A celestial body has these properties: It is too small to clear objects that are in its orbital path. It has a rocky surface but no rings. What could the celestial body be? A. Jupiter B. Mars C. Neptune D. Pluto E.

Is evaporation/condensation a physical or chemical change? Explain

Would the two as yet undiscovered elements A+1 and D+2 react?

Ammonium perchlorate is a powerful solid rocket fuel, used in the Space Shuttle boosters. It decomposes into nitrogen gas, chlorine gas, oxygen gas and water vapor, releasing a great deal of energy.

Determine the number of bonding electrons and the number of nonbonding electrons in the structure of SeCl2.

The same amount of energy is required to remove each electron sequentially from an atom. A. TrueB. False