In the periodic table of elements, some elements share similar properties and have the same number of valence electrons in their outer shell. what do we call these type of elements in the periodic table of elements.

Which of the following occurs in an ionic bond? A: Oppositely charged ions attract. B: Two atoms share two electrons. C: Two atoms shares more than two electrons. D: Like-charged ions attract

How many molecules are contained in 1.30 mol O2 Answer in units of molec How many molecules are in 1.70 mol He Answer in units of molec How many molecules are in 0.0800 mol NH3 Answer in units of molec How many molecules are in 15.

A net force causes no change in an object's motion. True False

Gino took 6 hours to complete a journey at an average speed of 65 km / h lorry took 2 hours fewer than Gino to complete the same journey what was lorry me average speed for the whole journey

In 1909 Fritz Haber discovered the workable conditions under which nitrogen, N2 (g), and hydrogen, H2 (g), would combine using to produce ammonia.

What is more dangerous, current or voltage? Why?

What is the significance of the symbol of an element?

Consider the half reactions below for a chemical reaction. 2 Equations: First: upper M g right arrow upper M g superscript 2 plus (a q) plus 2 e superscript minus.

If you put some sodium chloride (table salt) into a glass of water, what will happen?

Why don't the inert gases easily react with other elements?