Which of the following covalent bonds would be most polar: C-Cl, C-F, Cl-F, F-F? Use the locations of these elements on the Periodic Table of Elements to support your answer.
Question 5
5.
Question 6
6.
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
Name this molecule
Which is the correct molecular formula for dinitrogen monoxide?
N2O2
O2N
N2O
NO2
How many valence electrons does Nitrogen have, and how many covalent bonds does it form?
5, 3
4, 4
6, 2
Polar covalent bonds tend to form between two atoms with what characteristics? (Choose the best answer)
Different elements with similar electronegativity
Different elements and electronegativities
The same element and electronegativity
The same element with different electronegativity
If you want to change the polarity of HBr (Hydrogen bromide) by substituting bromine with a different atom. Which atom would increase the polarity of the molecule?
sulfur (S)
hydrogen (H)
chlorine (Cl)
iodine (I)
Which of the following chemical substances has a triple covalent bond?
H2O (dihydrogen monoxide or water)
CO2 (carbon dioxide)
O2 (oxygen)
CO (carbon monoxide)
Which of the following statements about covalent bonds are true? Select all that apply.
Covalent bonds are comprised of metal atoms that share at least some of their valence electrons.
Covalent bonds can be single, double, or triple bonds.
Covalent bonds hold ionic compounds together.
Covalent bonds hold the atoms together in discrete molecules.
Covalent bonds form when atoms of nonmetals are close enough to each other for their orbitals to overlap.
Chemistry students are learning about Lewis structures. Their instructor asks them to draw Lewis structures for carbon dioxide using both electron dots and bonds to show bonding relationships.
Which of the following Lewis structures are correct? Select all that apply.
I
II
III
IV
What is the name of the chemical with the formula SF6?