3. Question 8. Some non-metals can share electrons and form stable bonds with other atoms. 8. 4. Non-metals can be solids, liquids and even gasses. Non-metals do not show such displacement reactions. Ionic bonds occur between metals (electron donors) and non-metals (electron acceptors) because of the electrostatic force of attraction between positive and negative ions. As non - metals do not provide these electrons, they cannot displace hydrogen from acids. Reaction of Non-metals with Chlorine. Hydrogen is the easy example. Non-metals themselves are acceptors of electrons. Hence non-metals are called electron acceptors. Non-metals: Non-metals form acidic oxides with oxygen of air. LEO goes GER, Loss of electron = oxidation; gain of electron = reduction. Question 1. Why solid sodium Chloride does not conduct electricity? Again, the trend is interrupted at Group 15 due to the np3 configuration (spin pairing must occur). So, they cannot supply electrons to H+ ions. They are electron acceptors. Non-metals cannot displace hydrogen from dilute acids. When any substance reacts with the acid, it provides electrons, so that H+ ion will be formed. Non-metals can not displace hydrogen from acids as, non- metals do not lose electrons radially. 2. It cannot supply electrons to H + and hence, it does not displace hydrogen from dilute acids. Solution Show Solution Metals are good reducing agent s because they are electron donors Generally, form both ionic and covalent bonds. Metals are electron donors and non-metals are electron acceptors. So, look at the periodic table. Chemical properties of Non-metals: 1. 7. 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. 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 are electron acceptors and hence are electronegative. This means metals form positive ions and non-metals form negative ions. Metals are good _____ (oxidizing agents / reducing agents) because they are electron _____ (acceptors / donors). That is why metals displace hydrogen from dilute acids. Electron Affinities This is the reverse of ionisation (energy change when an electron is added to an atom/ion. Generally, metals displace hydrogen from dilute acids. For example, So, they do not displace hydrogen from dilute acids. Generally, metals form ionic bonds. Non-metals do not react with dilute acids and don’t displace hydrogen from dilute acids, because non-metals are electron acceptor. Hence they are unable to displace H+ from the acid to form a salt and release hydrogen gas. One exception is hydrogen, but it might in fact be a metal. On the other hand, non-metal is an electron acceptor. Ionic bonding is observed because metals have few electrons in their outer-most orbitals. Metals are electron donors and hence are electropositive. ///// chemistry. Metals and Non-metals Class 10 Important Questions Long Answer Type. To release H+ from the acid, the non-metal has to provide the extra electron. Ionic or electrovalent bonds are formed under the conditions of low ionization energy, high electron affinity, and high lattice energy. 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. 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