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22 terms

Chemistry Covalent Bonding Questions

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Which is a typical characteristic of an ionic compound?
The ionic compound has a high melting point.
Which of these elements does not exist as a diatomic molecule?
Ne
How do atoms achieve noble-gas electron configurations in single covalent bonds?
Two atoms share two electrons.
Which of the following elements can form diatomic molecules held together by triple covalent bonds?
Nitrogen
A molecule with a single covalent bond is..
Cl2
Which of the following covalent bonds is the most polar?
H--F
What does the term coordination number in ionic crystals refer to?
The # of oppositely charged ions surrounding a particular ion.
Which of the following is NOT a characteristic of most ionic
They have low melting points.
Which of the following particles are free to drift in metals?
Electrons.
What is the basis of a metallic bond?
The attraction of metal ions to mobile electrons.
What characteristic of metals makes them good electrical conductors?
They have mobile valence electrons.
What is the element with the lowest electronegativity value?
Cesium.
What is the element with the highest electronegativity value?
Fluorine.
Which statement is true about electronegativity value?
It increases from left to right across a period.
Compared with the electronegativities of the elements on the left side of a period, the electronegativities of the elements on the right side of the same period tend to be...
Higher.
How man valence electrons does an iodine atom have?
7
What is the total number of covalent bonds normally associated with a single carbon atom in a compound?
4
How many electrons are shared in a single covalent bond?
2
How many electrons does a nitrogen atom need to gain in order to attain a noble-gas electron configuration?
3
How many unshared pairs of electrons does the nitrogen atom in ammonia possess?
1
How many electrons are shared in a double covalent bond?
4
How many covalent bonds are in a covalently bonded molecule containing 1 phosphorus atom and 3 chlorine atoms?
3