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1. Which of the following occurs in an ionic bond? •oppositely charged ions attract. •two atoms share two electrons. •two atoms share more than two electrons. •like-charged ions attract. 2. Which pair of elements is most likely to form an ionic bond? •hydrogen and helium •lithium and potassium •potassium and iodine •iron and zinc 3. Ionic compounds are normally in which physical state at room temperature? •solid •liquid •gas •plasma

Cynthia Baker

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Craig Stewart on December 9, 2018

1) the Answer is: the ions of opposite charge attract each other.Ionic bond is formed when the metal transfers its extra electron to a non metal than you need to. Ionic bond is the electrostatic attraction between ions of opposite charge.For example, a compound of magnesium chloride (MgCl₂) has ionic bond. Magnesium transfers two electrons (which happened to be positive cation) chlorine (that happened to be in the negative anion). 2) the Answer is: the potassium and the iodine.Potassium is the metal of the first group of the Periodic table of the elements.Potassium is a chemical element with the atomic number 19 (the number of electrons is 19). The electronic configuration of potassium is: ₁₉K 1s22s22p⁶3s23p⁶4s1. The potassium is the alkali metal and has a single valence electron in the outer electron shell. The electronic configuration of the atom of iodine: 1s2 2s2 2p⁶ 3s2 3p⁶ 3d1⁰ 4s2 4p⁶ 4d1⁰ 5s2 5p⁵.The potassium lost an electron and iodine gain electrons and form anions.3) the Answer is: solid.For example, fluoride of magnesium (MgF₂) is the salt, the ionic compound with high melting and boiling points due to strong ionic bonds.Magnesium (Mg) is the metal of 2. group of the Periodic table of the elements and has a low ionization energy and electronegativity, which means that you can easily lose the valence electons (two valence electrons). Magnesium has atomic number 12, meaning it has 12 protons and 12 electrons. Lost two electrons to form cation magnesium (Mg2⁺) with electronic configuration as stable as the nearest noble gas neon (Ne), with 10 electrons. Fluorine (F) is non-metal with the greatest electronegativity, which means they can easily gain electrons. The fluorine-jas atomic number 9, which means it has 9 protons and 9 electrons. Gain an electron to form the fluoride anion (F⁻) with electronic configuration as stable as the nearest noble gas neon (Ne), with 10 electrons.


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