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Level 50

Nature of Covalent Bonding


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stable electron
When atoms share electrons to gain the_______configuration of a noble gas, the bonds formed are covalent
shared
A_______pair of valence electrons constitutes a single covalent bond
unshared pairs
pairs of electrons in covalent bonds that do not participate in bonding and belong to only 1 atom
double/triple
Sometimes two or three pairs of electrons; this is a_______
coordinate covalent bond
A covalent bond in which one atom contributes both bonding electrons
Energy
can cause change or do work
Bond Dissociation Energy
Energy required to break a covalent bond
resonance structure
any one of two or more possible configurations of the same compound that have identical geometry but different arrangements of electrons
Not true
The modern interpretation of resonance is that electron pairs rapidly flip back and forth between the various electron dot structures
Always True
The compound NH3 contains two double covalent bonds
Sometime true
The chemical formulas of molecular compounds show the number and type of atoms in each molecule
single covalent bond
2 atoms held together by sharing one pair of electrons
Structural formula
A structural formula shows the connectivity of the atoms in the molecule.
unshared pair
a nonbonding pair of electrons in the valence shell of an atom; also called lone pair
Double covalent bond
a bond that involves two shared pairs of electrons
Triple covalent bond
a bond formed by sharing three pairs of electrons
Polyatomic Ion
A covalently bonded group of atoms that has a positive or negative charge and acts as a unit ex: sulfate (-2 charge)