Ions and Ionic Compounds
The electron configuration of Mg+2 is?
1s2 2s2 2p6
The electron configuration of Na+1 is what?
1s2 2s2 2p6
The electron configuration of O-2 is what?
1s2 2s2 2p6
The number of valence electrons and bonding electrons in an atom of a halogen are?
7 valence electrons, 1 bonding electron
Which group of elements have one valence electron and they lose one electron to form a +1 ion?
Alkali metals
Which of the following elements will form ionic bonds by giving electrons? Ca, Mg, Na, All of the above
All of the above
In an ion bond there is?
An transfer of electron from a metal to a nonmetal.
Ionic compounds are?
Brittle
Which of the following pair of elements can form an ionic bond? Na and He Ca and Cl K and Na C and O
Ca and Cl Because an ionic bond is the electrostatic attraction force between cations (positive ions from metal) and anions (negative ions from nonmetal). One bonded, metal and nonmetal form ionic compound (or salt)
CaCl2, is an ionic compound. Which element in CaCl2 gives electron? Which one receive electron?
Ca gives and Cl receives electron
Ionic compounds are?
Can conduct electricity in the molten state and aqueous (water) solution
Which of the following regularly forms ionic bonds by receiving electrons? K, Cu, Cl, All of the above
Cl
What is a property of an ionic compound?
Conducting electricity in molten state. High melting points. Brittle.
An octet is equal to what?
Eight
Separated atoms form chemical bonds so that the number of electrons in their outer most energy levels of each atoms is _____.
Eight
The malleable property of metals related to?
Electron sea
The ____ can be used to explain many properties of metals such as malleable, ductile, good conductor of heat and electricity.
Electron sea model
How are ions in an ionic compound held together?
Electrostatic attraction forces
What type of force hold ions together in salts such as CaCl2?
Electrostatic force
What's the Octet rule?
Elements achieve stable electron configuration of noble gases by losing, gaining, or sharing valence electrons
Nonmetallic elements can attain the stability of the noble gases by ______ their valence electrons.
Gaining
In an ionic bond, a Chlorine atom achieves an octet of electrons (stable electron configuration) by?
Gaining one electron
In an ionic bonds an oxygen atom achieves an octet of electrons (stable electron configuration) by?
Gaining two electrons
Alkaline earth metals ______
Have two valence electrons, have two bonding electrons, lose two electrons when bonding
What is the electrostatic attraction forces between positive and negative ions?
Ionic bond
What properties allow salt solutions or molten salts to conduct electricity?
Ionic bonding
How does oxygen obey the octet rule?
It gains two electrons
In an ionic bond a sodium atom achieves an octet of electrons (stable electron configuration) by?
Losing one electron
In and ionic bond, a calcium atom achieves an octet of electrons (stable electron configuration) by?
Losing two electrons
Ionic bonds are formed by a complete transferring of electrons from a what?
Metallic atom to a non-metallic atom
The _____ is the attraction Force between positive cores and surrounding mobile electrons.
Metallic bond
In the electron sea model of a metallic bond electrons are?
Mobile
When they are combined to form compounds by chemical bonds, atoms are?
More stable and at lower energy level
Individual atoms bond together to form a compound because they will be?
More stable and out lower energy
Which element is more likely to form a cation? Na, Cl, N, He
Na
The _____ States that atoms can gain, lose or share their electrons to form a stable electron configuration of the noble gases.
Octet Rule
Group 1A elements need to lose how many electrons to satisfy the octet rule?
One
Group 7A elements need to gain how many electrons to satisfy the octet rule?
One
The electron configuration of fluorine is 1s2 2s2 2p5. Fluorine atoms need how many electrons to satisfy the octet rule?
One
How many total atoms present in magnesium sulfate, MgSO4?
Six Because.... MgSO4= 1 Mg atom + 1 S atom + 4 O atoms= 6 total atoms
The noble gases do not react with other elements to form chemical compounds because?
They are very stable, except He they have octet valence electrons they, have low-energy
Group 5A elements need how many electrons to satisfy the octet rule?
Three
True or False The octet rule states that most atoms are not stable so that they can gain, lose or share their valence electrons to achieve the stable electron configuration of the stable gases.
True
Electron configuration of oxygen is 1s2 2s2 2p4. Oxygen atoms need how many electrons to achieve the stable electron configuration of the noble gases?
Two
Group 2A elements need to lose how many electrons to satisfy the octet rule?
Two
And ionic compounds each repeating unit is called?
Unit cell
Only _____ involve in the formation of a chemical bond.
Valence electrons
