What type of elements form positive ions, or cations?
Question
What type of elements form positive ions, or cations?
Solution
Metals are the type of elements that form positive ions, or cations. This happens because metals have a tendency to lose electrons during chemical reactions, forming positive ions. The process is as follows:
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Metals have few electrons in their outermost energy level, or shell. These electrons are relatively far from the nucleus and are not strongly attracted to it.
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When a metal reacts with a non-metal, it tends to lose these outer electrons. This is because non-metals have a stronger attraction for electrons (they have more protons in their nucleus).
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When a metal atom loses electrons, it becomes a positive ion. This is because it now has more protons (which are positively charged) than electrons (which are negatively charged).
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The positive ion, or cation, is stable because its outer energy level is now full. This makes it less likely to react further.
So, in summary, metals form positive ions, or cations, because they tend to lose electrons during chemical reactions with non-metals.
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A cation is another word for:A metal atomA negative ionA positive ionA non-metal atom2An ionic bond is:An electrostatic attraction between similarly charged ionsAn electrostatic attraction between oppositely charged ionsAn electrostatic repulsion between similarly charged ionsAn electrostatic repulsion between oppositely charged ions3Non-metal atoms form ions by:Losing one or more electrons to form a positive ionGaining one or more electrons to form a positive ionLosing one or more electrons to form a negative ionGaining one or more electrons to form a negative ion4Ionic bonds always occur between:Metal and non-metal atomsNon-metal atomsMetal atomsNoble gases5Which of the following statements about a positive ion is true?It has more protons than electronsIt has more electrons than protonsIt has more electrons than neutronsIt has an equal number of protons and electrons6A calcium ion has the formula Ca2+. What is its electronic structure?2, 8, 102, 82, 8, 62, 8, 8
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