Chapter 5: Formations of Ions and Bonding
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Last updated 11:21 AM on 11/25/22
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25 Terms
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Covalent
________ bonding happens in compounds of non- metals and in non- metal elements.
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Dot
________ and cross diagrams are useful for showing how ionic compounds are formed, but they dont show the structure of the compounds, the size of the ions or how theyre arranged.
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oxygen atom
A(n) ________ is in Group 6 so it gains 2 electrons to form an oxide ion with the same electronic structure as neon.
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chlorine atom
A(n) ________ is in Group 7 so it gains 1 electron to form a chloride ion with the same electronic structure as argon.
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electron
Each ________ is represented by a dot or a cross.
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Na+
The ________ and Cl- ions are held together in a regular lattice.
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Ions
________ are charged particles- they can be single atoms or groups of atoms.
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sodium atom
A(n) ________ is in Group 1 so it loses 1 electron to form a sodium ion with the same electronic structure as a neon.
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single covalent bond
Each ________ provides one extra shared electron for each atom.
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magnesium atom
A(n) ________ is in Group 2 so it loses 2 electrons to form a magnesium ion with the same electronic structure as neon.
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non metal atoms
When ________ bond together, they share pairs of electrons to make covalent bonds.
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negative ions
Group 6 and 7 elements are non- metals and they gain electrons to form ________ (anions)
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Dot
________ and cross diagrams show the arrangement of electrons in an atom or ion.
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chlorine atom
The ________ picks up the electron, becoming a Cl- ion.
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oxygen atom
The ________ picks up the two electrons, becoming an 02- ion.
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sodium atom
The ________ gives up its outer electron, becoming an Na+ ion.
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magnesium atom
The ________ gives up its two outer electrons, becoming an Mg2+ ion.
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Group 6 elements form 2
ions
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Group 7 elements form 1
ions
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Cl + e
- cl-
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O + 2e
- O2-
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The chlorine atom picks up the electron, becoming a Cl
ion
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The two chlorine atoms picks up one electron each, becoming two Cl
ions
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The oxygen atom picks up the two electrons, becoming an 02
ion
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The Na+ and Cl
ions are held together in a regular lattice
