Another name for the representative elements is the "A elements." These elements are found within the first two families and last six families of the Periodic Table.Know More
The representative elements are found in Groups I and II, which are on the left side of the Periodic Table, and Groups III through VIII on the right side of the table. These elements include the alkali metal group, alkaline earth metals and chalcogens.
The elements in each group share the same characteristics. For example, alkali metals are soluble in water and easily cut with a knife. Alkaline earth metals are harder than alkali metals, and they are not as reactive with oxygen.Learn more about Atoms & Molecules
Halogens include the elements chlorine, bromine and iodine, which form Group 7 in the periodic table of elements. Halogens vary in size, weight and other physical characteristics, but share several commonalities. All halogens are diatomic, which means they appear as molecules and have pairs of atoms.Full Answer >
Potassium hydroxide (KOH) has a molar mass of 56.10564 grams per mole that is obtained by adding the atomic weights of potassium, oxygen and hydrogen, the elements from which it's made. Potassium contributes 69.69 percent of the total mass, followed by oxygen at 28.52 percent and hydrogen at 1.8 percentFull Answer >
The periodic table classifies chemical elements by their similarities and properties. Each square in the periodic table shows an element's atomic number, its symbol, its name and its atomic weight, which is the number of protons and neutrons the element has.Full Answer >
Titanium has a melting point of 1,941 Kelvin, or 3,287 degrees Celsius, making it one of the more heat-resistant elements on the periodic table. Titanium is the lightest refractory metal, which is a group distinguished by its resistance to heat.Full Answer >