When atoms combine to form a molecule by sharing electrons, what type of bonds are formed?
covalent
hydrogen
ionic
polar ionic
A metallic bond is formed between
a metal atom and a hydrogen atom
a metal atom and a nonmetallic atom
a metal atom and a noble gas
two metal atoms
The bonds found in C2H4 are
metallic
polar
Which is a covalent compound
Mg3N2
NaCl
NaF
SiF4
Salts are compounds that form a crystal lattice. Which types of bonds are responsible for this lattice formation?
The electrostatic attraction between atoms in a salt is
strongest when the ions are small
weakest when one of the ions is hydrogen (atomic number 1)
strongest when one of the ions is potassium (atomic number 19)
strongest when one of the ions is iodine (atomic number 53)
Which illustration most likely represents a liquid?
Q
R
S
T
At room temperature, which substance has the weakest intermolecular forces?
oxygen
salt
steel
uranium
Why are Lewis dot structures used?
to show what type of bonds are formed
to show valence electrons
to show electronegativity values
to show intermolecular forces
Fluorine has seven electrons in its Lewis dot structure. What is the electron configuration for fluorine?
1s²2s²
1s²2s²2p³
1s²2s²2p⁴
1s²2s²2p⁵
The electron configuration for an atom of iron is [Ar] 3d⁶4s². Which is the correct Lewis dot structure for iron?
The Lewis dot structure for Cl2 is shown below. What is the probable shape of Cl2?
bent
linear
pyramidal
tetrahedral
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