How does electron sharing occur in forming covalent bonds?
In forming covalent bonds,electrons sharing usually occurs so that atoms attain the electron configuration of noble gases.
100
What is a molecular orbital?
An orbital that applies to the entire molecular
100
What is a nonpolar covalent bond?
When the atoms in bond pull equally,the bonding electrons are shared equally.
100
How many valence electron does CARBON have?
Four (4)
200
TRUE or FALSE? Ionic compounds tends to have relatively lower melting and boiling points than Molecular compounds.
FALSE. Molecular compounds tends to have relatively lower melting and boiling points than ionic compounds
200
What is a structural formula?
Covalent Bond represented by dashes and shows the arrangement of covalently bonded atoms.
200
TRUE OR FALSE? The S atomic orbital cannot go through the Pi Bond?
True. Pi Bond can only take place on a P atomic bond.
200
What are examples of nonpolar covalent bond?
Molecules of Hydrogen(H2),Oxygen (O2),and Nitrogeb (N2).
200
What are two of the nine possible molecular shapes?
POSSIBLE ANSWERS: Linear triatomic,Trigonal planar,Bent triatomic,Pyramidal,Tetrahedral,Trigonal bipyramidal,Octahedral,Square planar,T-shaped
300
What is a molecule?
A neutral group of atom joined together by covalent bond.
300
What is a resonance structure?
A structure that occurs when it is possible to draw two or more valid electron dot structures that have the same number of electron pair for a molecular or ion.
300
What does the VSEPR theory established?
According to VSEPR theory,the repulsion between electron pairs causes molecular shapes to adjust so that the valence-electron pairs stay as far apart as possible
300
What is a polar covalent bond?
A covalent bond between atoms in which the electrons are shared unequally.
300
Draw electron dot configuration for the following molecules,which have only single covalent bonds- PH3
Teacher will check answer.
400
What does a molecular formula shows?
It shows how many atoms of each element a molecular contains.
400
How is a coordinate covalent bond different from other covalent bonds?
In a coordinate covalent bond, both of the electrons in the bond come from the same atom. In a regular covalent bond, each atom provides an electron to make the bond.
400
How is orbital hybridization useful in describing molecules?
Orbital hybridization provides information about both molecular bonding and molecular shape.
400
TRUE or FALSE? The less electronegative atom attracts electrons more strongly and gains a slightly negative charge.
FALSE. The less electronegative atom has a slightly positive charge.
400
What is a bond dissociation energy?
The energy requires to break the bond between two covalently bonded atoms.
500
Give an example of a diatomic molecule found in Earth's atmosphere?
Nitrogen (N2) and Oxygen (O2) are diatomic molecules found in Earth’s atmosphere.
500
List two ways in which the octet rule can sometimes fail to be obeyed.
The octet rule can not be satisfied in all conditions. For instance, it can’t be obeyed if a molecule has an odd number of valence electrons. Also, it fails if an atom in a molecule has fewer or more than eight valence electrons as a result of bonding.
500
What shape would you expect a simple carbon-containing compound to have if the carbon atom has sp3?
tetrahedral
500
How does a network solid differs from most other covalent compounds?
The atoms in a network solid are covalently bonded in a large array (or crystal), which can be thought of as a single molecule.
500
TRUE or FALSE? Atoms form double or triple covalent bonds if they can attain a noble gas structure by sharing two pairs or three pairs of electrons