of the following elements which is most likely to form a negative ion with charge 1–?
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In the given elements chlorine (2,8,7) is a non metal with highest electronegativity. Hence, it is most likely to form a negative ion with charge −1.
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In which case, the positive ion is Pb(2+) and the negative ion is I- (iodide).
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A neutral chlorine atom, for example, contains 17 protons and 17 electrons. By adding one more electron we get a negatively charged Cl- ion with a net charge of -1.
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metal atoms lose electrons to form positively charged ions. non-metal atoms gain electrons to form negatively charged ions.
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The ions are held together by strong electrical attractions between the oppositely charged ions, called ionic bonds. The positive ions are formed by metals losing electrons, and the negative ions are formed when nonmetals gain electrons.
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Alkali metals tend to lose one electron and form ions with a single positive charge. They form ionic compounds (salts) in reaction with the halogens (alkali halides).
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Ions are formed when atoms lose or gain electrons in order to fulfill the octet rule and have full outer valence electron shells. When they lose electrons, they become positively charged and are named cations. When they gain electrons, they are negatively charged and are named anions.
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Ionic bond is formed between positive and negative ions.
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A negative ion is formed by the addition of negatively charged electrons. The protons do not change. Only non-metal atoms with l-3 electrons missing in the outer level add electrons to complete that level like the nearest rare gas. Metals never form negative ions.
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Sulphate ion has 2 negative charges. Ammonium has one positive charge, therefore you need two of them. One ammonium is surrounded by 4 hydrogen.
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Ionic compounds are formed as the result of the formation of positive and negative ions. Electrons are actually transferred from one atom to another to form rare gas electron structures for each ion. The atom which forms a positive ion loses electrons to the atom which gains electrons to form a negative ion.
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When forming ions, elements typically gain or lose the minimum number of electrons necessary to achieve a full octet. For example, fluorine has seven valence electrons, so it is most likely to gain one electron to form an ion with a 1- charge. We can use this method to predict the charges of ions in ionic compounds.
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an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons, as a cation (positive ion), which is created by electron loss and is attracted to the cathode in electrolysis, or as an anion (negative ion), which is created by an electron gain and is attracted to the anode.
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Atoms of elements can lose or gain electrons making them no longer neutral, they become charged. A charged atom is called an ion. When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons.
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If atoms gain electrons, they become negative ions, or anions. Consider the example of fluorine (see Figure below). A fluorine atom has nine protons and nine electrons, so it is electrically neutral. If a fluorine atom gains an electron, it becomes a fluoride ion with an electric charge of -1.
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Fluorine, therefore, has a lower affinity for an added electron than does chlorine. Consequently, the elements of the third row (n = 3) have the most negative electron affinities.
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More precisely atoms with a positive charge are known as cations while atoms with a negative charge are known as anions. Boron, above, forms a cation.