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8.2
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9.2
100
Valence electrons are represented by dots placed around the chemical symbol.
What is electron dot structure
100
the types of charged particles attract each other
What is oppositely charged particles
100
a mixture of metals or a mixture of a metal and another element
What is alloy
100
an electrically neutral group of two or more atoms held together by chemical bonds
What is a molecule
100
a pair of electrons involved in a covalent bond
What is bonding pair
200
having the same numbers of electrons or the same electronic structure.
What is isoelectronic
200
the types of particles that repel each other
What is particles with like charges
200
In a unit cell, an atom's coordination number is the number of atoms it is touching
What is closest packing
200
a charged chemical ion composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit
What is polyatomic ions
200
the number of lone pairs or bond locations around a particular atom in a molecule
What is electron domain geometry
300
atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell
What is octet rule
300
the symmetrical three-dimensional arrangement of atoms inside a crystal
What is crystal lattice
300
a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons and positively charged metal ions
What is metallic bond
300
a chemical bond that involves the sharing of electron pairs between atoms
What is covalent bond
300
three-dimensional arrangement of the atoms that constitute a molecule
What is molecular geometry
400
in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels
What is aufbau principle
400
chemical bond that involves the electrostatic attraction between oppositely charged ions
What is ionic bond
400
molecules composed of only two atoms, of the same or different chemical elements
What is diatomic molecule
400
the outermost shell of an atom in its uncombined state
What is valence shell
500
the energy required to remove an electron from a neutral atom
What is ionization energy
500
a chemical compound composed of ions held together by electrostatic forces
What is ionic compound
500
a pair of valence electrons that are not shared with another atom and is sometimes called a non-bonding pair
What is lone pair
500
a model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms
What is valence shell electron pair repulsion