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(i) Write the electron-dot structures for sodium and oxygen. (ii) Show the formation of Na2O and MgO by the transfer of electrons. (iii) What are the ions present in these compounds?
The electron-dot structure for sodium (Na) is represented as Na•, where the dot represents the valence electron. The electron-dot structure for oxygen (O) is represented as •O•, where each dot represents a valence electron. Formation of Na2O and MgO by the transfer of electrons: Na2O is formed by thRead more
The electron-dot structure for sodium (Na) is represented as Na•, where the dot represents the valence electron.
The electron-dot structure for oxygen (O) is represented as •O•, where each dot represents a valence electron.
Formation of Na2O and MgO by the transfer of electrons:
Na2O is formed by the transfer of electrons from sodium (Na) to oxygen (O). Each sodium atom donates one electron to oxygen, resulting in the formation of two sodium cations (Na+) and one oxygen anion (O2-). The resulting compound is Na2O.
MgO is formed in a similar manner. Magnesium (Mg) donates two electrons to oxygen, resulting in the formation of one magnesium cation (Mg2+) and one oxygen anion (O2-). The resulting compound is MgO.
Ions present in Na2O and MgO:
In Na2O, the ions present are two sodium cations (Na+) and one oxygen anion (O2-).
In MgO, the ions present are one magnesium cation (Mg2+) and one oxygen anion (O2-).
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Explain the meanings of malleable and ductile.
Malleability refers to the property of a metal to be beaten into thin sheets without breaking or cracking. It allows metals to be shaped and formed into various structures or objects. Gold and silver are examples of metals that are highly malleable. Ductility refers to the property of a metal to beRead more
Malleability refers to the property of a metal to be beaten into thin sheets without breaking or cracking. It allows metals to be shaped and formed into various structures or objects. Gold and silver are examples of metals that are highly malleable.
Ductility refers to the property of a metal to be drawn into thin wires without breaking or fracturing. It allows metals to be stretched and formed into long, thin strands. Gold is the most ductile metal, and a wire of about 2 km length can be drawn from just one gram of gold.
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1. Give an example of a metal which (i) Is a liquid at room temperature? (ii) Can be easily cut with a knife? (iii) Is the best conductor of heat? (iv) Is a poor conductor of heat?
Examples of Metals (i) A metal that is a liquid at room temperature is mercury. (ii) A metal that can be easily cut with a knife is sodium. (iii) The best conductor of heat among metals is silver. (iv) A poor conductor of heat among metals is lead.
Examples of Metals
(i) A metal that is a liquid at room temperature is mercury.
(ii) A metal that can be easily cut with a knife is sodium.
(iii) The best conductor of heat among metals is silver.
(iv) A poor conductor of heat among metals is lead.
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