Isotopes
What is the mass of an atom with 5 protons and 7 neutrons?
12 amu
What is the charge on a Ga ion?
3+
covalent bonds form between two ( blank )?
nonmetals
Dinitrogen Trioxide
What is the formula
N2O3
Name two properties of covalent bonds?
low boiling/melting points
Don't conduct electricity
Found as any State of matter
If you have an atom of carbon with 7 neutrons, what is the mass?
13 amu
What is a charge on a P ion?
3-
What is a covalent bond?
A bond that shares an electron pair
Iron (III) Bromide
What is the formula?
FeBr3
Li-7 (2.74%)
Li-5 (62.37%)
Li-8 (34.89%)
What is the average atomic mass?
6.10 amu
If an atom of oxygen has a mass of 17, how many neutrons does this atom have?
9 neutrons
How are ionic bonds formed?
electrons are transferred from a one atom to another, forming a cation and an anion with opposite charges that are attracted to each other
Is a covalent bond going to form between a polyatomic ion and a nonmetal?
No a covalent bond cannot have an ion in it
Mg(NO3)2
Magnesium Nitrate
What is a nonpolar bond?
A covalent bond that shares electrons evenly?
If an atom of silver has a mass of 98, how many neutrons does this atom have?
51 amu
After transferring electrons how many dots do you draw for most negative ions?
8
How many bonds can form with a nitrogen molecule?
3
H4I9
Tetrahydrogen Nonaiodide
Br-79 (74.3%)
Br-78 (2.4%)
Br-75 (10.2%)
Br-74 (13.1%)
What is the average atomic mass?
77.91 amu
Write the following in isotope format:
Bromine-80
8035Br
How do you use valence electrons to figure out ion charge?
more than 4 subtract 8 from valence electrons (negative), less than 4 the charge is the same as valence electrons (positive)
Can the following covalent bond be formed? Why or why not?
Ni(OH)2
What is the name?
Nickel (II) Hydroxide
What does "like dissolves like" mean?
Polar can only dissolve other polar molecules
Nonpolar can only dissolve nonpolar molecules