Ionic bonds occur between metals (electron donors) and non-metals (electron acceptors) because of the electrostatic force of attraction between positive and negative ions. Generally, metals form ionic bonds. Ionic or electrovalent bonds are formed under the conditions of low ionization energy, high electron affinity, and high lattice energy. 8. ///// chemistry. So, they cannot supply electrons to H+ ions. 7. On the other hand, non-metal is an electron acceptor. Ionic bonds require an electron donor, often a metal, and an electron acceptor, a nonmetal. 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. Non-metals themselves are acceptors of electrons. By losing those electrons, these metals can achieve noble gas configuration and satisfy the octet rule. Ionic bonding is observed because metals have few electrons in their outer-most orbitals. Non-metals do not show such displacement reactions. Hence non-metals are called electron acceptors. Non-metals react with chlorine to form covalent chlorides. Generally, form both ionic and covalent bonds. Non-metals can be solids, liquids and even gasses. To release H+ from the acid, the non-metal has to provide the extra electron. It is seen that electron affinities generally increase on crossing the periods (same trend as for IE’s, and for the same reason). Non-metals: Non-metals form acidic oxides with oxygen of air. This means metals form positive ions and non-metals form negative ions. Solution Show Solution Metals are good reducing agent s because they are electron donors LEO goes GER, Loss of electron = oxidation; gain of electron = reduction. Metals are electron donors and hence are electropositive. Non-metals are electron acceptors and hence are electronegative. It cannot supply electrons to H + and hence, it does not displace hydrogen from dilute acids. One exception is hydrogen, but it might in fact be a metal. So, look at the periodic table. Hydrogen is the easy example. Metals and Non-metals Class 10 Important Questions Long Answer Type. Non-metals do not react with dilute acids and don’t displace hydrogen from dilute acids, because non-metals are electron acceptor. Question 8. Chemical properties of Non-metals: 1. So, they do not displace hydrogen from dilute acids. Metals have a tendency to lose electrons and hence they supply electrons, i.e., they are electron donors. As non - metals do not provide these electrons, they cannot displace hydrogen from acids. 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. For example, Question 1. Non-metals cannot displace hydrogen from dilute acids. Why solid sodium Chloride does not conduct electricity? Some non-metals can share electrons and form stable bonds with other atoms. Metals are electron donors and non-metals are electron acceptors. 4. Non-metals can not displace hydrogen from acids as, non- metals do not lose electrons radially. The elements to the left tend to donate electrons, because they have less than half a full valence shell. Again, the trend is interrupted at Group 15 due to the np3 configuration (spin pairing must occur). Metals are good _____ (oxidizing agents / reducing agents) because they are electron _____ (acceptors / donors). That is why metals displace hydrogen from dilute acids. 2. They are electron acceptors. Generally, metals displace hydrogen from dilute acids. Reaction of Non-metals with Chlorine. 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