Non-metals: Non-metals form acidic oxides with oxygen of air. Depending on the different metals markets, some metals may be on the upward trend while others are on the downward trend. Scrap metal prices are constantly changing so the iScrap App National Prices is a great resource for you to see the trend of where scrap prices are heading. Like the alkali metals, these elements are found in compounds rather than pure form. As opposed to metals, non-metallic elements are very brittle, and cannot be rolled into wires or pounded into sheets. Metals and Non-metals Class 10 Important Questions Long Answer Type. There are a few exceptions. 22.1 General Concepts: Periodic Trends • MainŒgroup elements ŒŒ the valence electrons are filling s and p orbitals • Three types of mainŒgroup elements: metal, metalloid, nonmetal • Increasing metallic character going down a group and from right to left across a period • Group Work: List the relative properties of the metals: If you are trying to learn to distinguish between metals and non-metals, a list and their uses is a good way to break them down and help memorize the difference between the two. The good news is that most elements are metals. Non-metals are bad conducts of heat and electricity, Many non-metals are insulators. In modern periodic table there are 22 non-metals in which there are 11 gases, 1 liquid and 10 solid. Non-metals cannot displace hydrogen from dilute acids. Non-metal essential for our life which all living being inhales during breathing. Non-Metal are those elements which do not exhibit the metallic characteristics. The number of non-metals is very less in comparison to metals, but non-metals are more useful for us. Non-metals are brittle. A useful way to approach the study of elements is to distinguish whether they are metal or non-metal. For examples, diamond is a good conductor of heat and graphic is a good conductor of electricity. Start studying Chapter 22 Chemistry of Nonmetals. The alkaline earth metals are found in group IIA of the periodic table, which is the second column of elements. Can you name the 22 named elements classified as "non-metals," all located on the right-hand side of the Periodic Table? They cannot be beaten into thin sheets or drawn into wires because of their brittleness. All of the alkaline earth metal atoms have a +2 oxidation state. This is because it is easier for a nonmetal to reach noble gas electronic configuration than a metal. Hydrogen Helium Boron Carbon Nitrogen Oxygen Fluorine Neon Silicon Phosphorus Sulfur Chlorine Argon Arsenic Selenium Bromine Krypton Tellurium Iodine Xenon Astatine Radon A non-metal is an element that when forming an ionic compound with a metal, accepts electrons to attain a full outermost shell. (Hint: This includes the Halogens and Noble Gases. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Non-metals are not able to conduct electricity or heat very well. So far only 22 non-metals are discovered. Non-metals do not show such displacement reactions. Alkaline Earth Metals . Question 1. Non-metals are the elements in groups 14-16 of the periodic table.