3. Look at the positions of calcium, beryllium, and magnesium on the periodic table. Based on their locations, predict how many valence electrons these elements have and predict what the reactivity of these elements will generally be.

An atom of aluminum has 13 protons and 14 neutrons. what is the atomic mass

A particular power source creates electricity through the use of giant magnets that are rotated to create a flow of electrons. This electricity is then directed: A. from the electric generator to electric outlets in homes B.

Who created the periodic table and in what year?

An unknown element is shiny and is found to be a good conductor of electricity, what other properties would you predict for it

What kind of materials can become electrically charged when they are rubbed together?

What does berkelium react with

Classifying living things

Find the parent acid and parent base of al2 (co33, determine if they are strong or weak, and determine if the salt is acidic, basic, neutral, or unpredictable.

A syringe contains 589 mL of CO at 325 K and 1.2 atm pressure. A second syringe contains 473 mL of N2 at 298 K and 2.6 atm. What is the final pressure if the contents of these two syringes are injected into a 1.00 L container at 0.00°C?

Which pair of elements can form an ionic compound? A) Two atoms of hydrogen B) One atom of sodium and one atom of fluorine C) One atom of calcium and one atom of chlorine D) Two atoms of hydrogen and one atom of oxygen