The presence of valence electrons can influence the element's chemical characteristics and its ability to bond with other elements. Columns in the periodic table represent groups or families of elements. They are related because of the similarities in the number of electrons in the outer shell, which is where valence electrons are located. An atom's valence electrons are in the outer shells of the electron cloud. Each element has its own electron configuration. Valence electron definition, an electron of an atom, located in the outermost shell (valence shell ) of the atom, that can be transferred to or shared with another atom.
Chemical Bonding: Ionic & Covalent
Objectives: Predict the type of chemical bonds formed by elements; Create Lewis Structures for covalent compounds; Correctly name simple chemical compounds
Point the mouse under the question for the correct answers
For representative elements, valence electrons are those electrons located __________.
in the outermost shell
How many valence electrons does the element oxygen have?
There are 6
Elements in groups IIA and VIA of the periodic table possess, respectively, how many valence electrons?
They have 2 and 6
The 'octet rule' relates to the number eight because ___
that is the most stable valence electron configuration
A positive ion is formed when an atom ___
loses one or more electrons
Elements in groups IA and VA of the periodic table would, respectively, be expected to form ions with charges of _________________.
+1 and -3
The Ca 2+ ion is isoelectronic with which noble gas?
Argon
The correct formula for the ionic compound formed between K and N is
K3N
The correct formula for the ionic compound formed between Ba and O is
BaO
The correct formula for the ionic compound formed between Al and S is
Al2S3
The correct formula for the ionic compound formed between Na and the sulfate ion is
Na2SO4
The correct formula for the ionic compound formed between the ammonium ion and the carbonate ion is
(NH4)2CO3
The correct name for the ionic compound Al2S3 is
aluminum sulfide
The correct name for the ionic compound Fe2O3 is Guitar rig 5 mac crack.
iron(III) oxide
What are the formulas of the nitrate ion and the phosphate ion?
NO3 -, PO43-
What are the formulas of the hydroxide ion and the cyanide ion?
OH -, CN -
What are the formulas of the sulfate ion and the sulfite ion?
SO42-, SO32-
How many electrons would be in the Lewis symbol for Fluorine and the Fluorine ion?
atom would have 7, ion would have 8
An ionic bond would form between which 2 types of atoms?
metal, nonmetal
A covalent bond would form between which 2 types of atoms?
nonmetal, nonmetal
What is the name of the compound CCl4?
carbon tetrachloride
What is the name of the compound N2O3?
dinitrogen trioxide
Why would a covalent bond be nonpolar? Polar?
It wuld depend on the difference in the negativity of the atoms involved in the bond. If there is no difference, it is nonpolar. If there is a difference, the bond is polar.
How many valence electrons are in this atom – 1s22s22p63s23p2 ?
There are 4
How many valence electrons are in this atom – 1s22s22p63s23p64s23d5 ?
There are 2
Representative elements in the same group of the periodic table have the same number of valence electrons. True or False
True
Discrete molecules do not exist in ionic compounds. True or False
True
All ionic compounds which contain metal ions have names which contain Roman numerals. True or False
False
The presence of valence electrons can influence the element's chemical characteristics and its ability to bond with other elements. Columns in the periodic table represent groups or families of elements. They are related because of the similarities in the number of electrons in the outer shell, which is where valence electrons are located. An atom's valence electrons are in the outer shells of the electron cloud. Each element has its own electron configuration. Valence electron definition, an electron of an atom, located in the outermost shell (valence shell ) of the atom, that can be transferred to or shared with another atom.
Chemical Bonding: Ionic & Covalent
Objectives: Predict the type of chemical bonds formed by elements; Create Lewis Structures for covalent compounds; Correctly name simple chemical compounds
Point the mouse under the question for the correct answers
For representative elements, valence electrons are those electrons located __________.
in the outermost shell
How many valence electrons does the element oxygen have?
There are 6
Elements in groups IIA and VIA of the periodic table possess, respectively, how many valence electrons?
They have 2 and 6
The 'octet rule' relates to the number eight because ___
that is the most stable valence electron configuration
A positive ion is formed when an atom ___
loses one or more electrons
Elements in groups IA and VA of the periodic table would, respectively, be expected to form ions with charges of _________________.
+1 and -3
The Ca 2+ ion is isoelectronic with which noble gas?
Argon
The correct formula for the ionic compound formed between K and N is
K3N
The correct formula for the ionic compound formed between Ba and O is
BaO
The correct formula for the ionic compound formed between Al and S is
Al2S3
The correct formula for the ionic compound formed between Na and the sulfate ion is
Na2SO4
The correct formula for the ionic compound formed between the ammonium ion and the carbonate ion is
(NH4)2CO3
The correct name for the ionic compound Al2S3 is
aluminum sulfide
The correct name for the ionic compound Fe2O3 is Guitar rig 5 mac crack.
iron(III) oxide
What are the formulas of the nitrate ion and the phosphate ion?
NO3 -, PO43-
What are the formulas of the hydroxide ion and the cyanide ion?
OH -, CN -
What are the formulas of the sulfate ion and the sulfite ion?
SO42-, SO32-
How many electrons would be in the Lewis symbol for Fluorine and the Fluorine ion?
atom would have 7, ion would have 8
An ionic bond would form between which 2 types of atoms?
metal, nonmetal
A covalent bond would form between which 2 types of atoms?
nonmetal, nonmetal
What is the name of the compound CCl4?
carbon tetrachloride
What is the name of the compound N2O3?
dinitrogen trioxide
Why would a covalent bond be nonpolar? Polar?
It wuld depend on the difference in the negativity of the atoms involved in the bond. If there is no difference, it is nonpolar. If there is a difference, the bond is polar.
How many valence electrons are in this atom – 1s22s22p63s23p2 ?
There are 4
How many valence electrons are in this atom – 1s22s22p63s23p64s23d5 ?
There are 2
Representative elements in the same group of the periodic table have the same number of valence electrons. True or False
True
Discrete molecules do not exist in ionic compounds. True or False
True
All ionic compounds which contain metal ions have names which contain Roman numerals. True or False
False
If an atom loses one or more electrons, it becomes negatively charged because protons now outnumber electrons. True or False
False
Nitrogen, a group VA element, possesses 5 valence electrons. True or False
True
Polyatomic ions are generally not very stable and usually lose their identity during chemical reactions. True or False
False
Ionic bonds result from the sharing of one or more pairs of electrons. True or False
False
In all ionic compounds the total charge of the ions present per formula unit must add up to zero. True or False
True
The polyatomic ions ammonium and cyanide do not contain oxygen. True or False
True
The total number of nonbonding electron pairs present in the Lewis structure of Cl2 is
There are 6
Would the compound formed between N and S most likely be a molecular compound?
Yes
Valence Electrons Are Electrons Located In The Innermost Energy Level Of An Atom
Would the compound formed between Ca and O most likely be a molecular compound?
No
Draw the Lewis Structure: VSEPR theory predicts that the geometry of the NH3 molecule is ___.
Trigonal pyramidal
Draw the Lewis Structure: VSEPR theory predicts that the geometry of the H2O molecule is ___.
Bent
What is the geometry of the molecular compound formed by the reaction of 1 sulfur with 2 hydrogen?
Bent (H2S)
Put the following sets of elements in order of decreasing electronegativity
a) Na, Cl, Al
b) O, Te, S
a) Cl, Al, Na b) Te, S, O
Are the molecules H2, I2, and HI polar or nonpolar ?(given their electronegativities: K = 0.8, H = 2.1, I = 2.5)
no, no, yes
What is a coordinate covalent bond?
a covalent bond in which both electrons of a shared pair come from one of the two atoms involved in the bond
The number of 'electron dots' in the Lewis formula for the compound HNO3 is
There are 24
Once a coordinate covalent bond is formed, there is no way to distinguish it from any of the other covalent bonds in a molecule. True or False
True
The least electronegative elements are located to the far right in the periodic table. True or False
See Full List On Wikihow.com
False
The central concept of VSEPR theory is that the electron groups in the valence shell of a central atom in a molecule repel each other. True or False
True
A Phosphorous-Sulfur bond is more polar than a Phosphorous-Chlorine bond. True or False
False
The 'normal' number of covalent bonds that the element carbon forms is four. True or False
True
CCl4 is a polar molecule. True or False
False
CO2 is a polar molecule. True or False
False
H2O is a polar molecule. True or False
True
The two atoms involved in a multiple covalent bond must always be atoms of the same element. True or False
False
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Valence Electrons Are Electrons Located Group Of Answer Choices
