So, they cannot supply electrons to H+ ions. Non-metals can be solids, liquids and even gasses. Metals and Non-metals Class 10 Important Questions Long Answer Type. They are electron acceptors. Question 8. Non-metals are electron acceptors and hence are electronegative. Metals are electron donors and hence are electropositive. Some non-metals can share electrons and form stable bonds with other atoms. For example, To release H+ from the acid, the non-metal has to provide the extra electron. Reaction of Non-metals with Chlorine. Generally, metals displace hydrogen from dilute acids. LEO goes GER, Loss of electron = oxidation; gain of electron = reduction. On the other hand, non-metal is an electron acceptor. Metals have a tendency to lose electrons and hence they supply electrons, i.e., they are electron donors. Non-metals cannot displace hydrogen from dilute acids. By losing those electrons, these metals can achieve noble gas configuration and satisfy the octet rule. 2. Non-metals: Non-metals form acidic oxides with oxygen of air. Generally, form both ionic and covalent bonds. 4. Again, the trend is interrupted at Group 15 due to the np3 configuration (spin pairing must occur). Generally, metals form ionic bonds. Non-metals can not displace hydrogen from acids as, non- metals do not lose electrons radially. Metals are good _____ (oxidizing agents / reducing agents) because they are electron _____ (acceptors / donors). This means metals form positive ions and non-metals form negative ions. Metals are electron donors and non-metals are electron acceptors. So, they do not displace hydrogen from dilute acids. As non - metals do not provide these electrons, they cannot displace hydrogen from acids. Ionic or electrovalent bonds are formed under the conditions of low ionization energy, high electron affinity, and high lattice energy. It is seen that electron affinities generally increase on crossing the periods (same trend as for IE’s, and for the same reason). Question 1. One exception is hydrogen, but it might in fact be a metal. Ionic bonding is observed because metals have few electrons in their outer-most orbitals. Chemical properties of Non-metals: 1. That is why metals displace hydrogen from dilute acids. ///// chemistry. When any substance reacts with the acid, it provides electrons, so that H+ ion will be formed. Hence they are unable to displace H+ from the acid to form a salt and release hydrogen gas. Electron Affinities This is the reverse of ionisation (energy change when an electron is added to an atom/ion. Non-metals react with chlorine to form covalent chlorides. The elements to the left tend to donate electrons, because they have less than half a full valence shell. Ionic bonds occur between metals (electron donors) and non-metals (electron acceptors) because of the electrostatic force of attraction between positive and negative ions. Hydrogen is the easy example. Solution Show Solution Metals are good reducing agent s because they are electron donors Non-metals do not show such displacement reactions. Sodium Chloride does not conduct electricity because the oppositely charged ions in Sodium Chloride are held by a strong electrostatic force of attraction and hence the free ions are absent to carry electric current. Reaction of non metals with water: Non metals do not react with water as to react, they need to displace hydrogen and for displacing, they need to donate electrons to hydrogen but it is not possible as they are themselves electron acceptors. Ionic bonds require an electron donor, often a metal, and an electron acceptor, a nonmetal. 8. 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