1) Based on the location of each element on the periodic table, predict what ion
ID: 570800 • Letter: 1
Question
1) Based on the location of each element on the periodic table, predict what ion of that element is most likely to form.
a. rubidium (Rb)
b. selenium (Se)
c. radium (Ra)
d. phosphorous (P)
2) Using the periodic table, predict the formula of the ionic compound likely to form when the following pairs of elements combine. Keep in mind that the formula of an ionic compound must have a net charge of zero.
a. potassium (K) and bromine (Br)
b. calcium (Ca) and fluorine (F)
c. cesium (Cs) and nitrogen (N)
d. aluminum (Al) and sulfur (S)
3) Name each binary ionic compound. When necessary, be sure to specify the charge on the cation with roman numerals.
a. MgF2
b. AlBr3
c. Cu2O
d. Cr2S3
4) Name each binary covalent compound.
a. BrF3
b. SiO2
c. P2O5
d. Se2S6
5) Write the chemical formula for each binary ionic compound.
a. lithium sulfide
b. strontium chloride
c. calcium phosphide
6) Write the chemical formula for each binary covalent compound.
a. carbon tetrabromide
b. dinitrogen trioxide
7) Name each compound containing a polyatomic ion.
a. Ca(HCO3)2
b. NH4NO3
c. Fe2(SO4)3
Explanation / Answer
1)
a)
Rb is in group 1
It can lose 1 electron and attain noble gas configuration
It will have +1 change
The ion is Rb+
b)
Se in group 6
So, it can accepts 2 more electrons and attain noble gas configuration
So, it will form Se2-
c)
Ra is in 2
It can lose 2 electrons and attain noble gas configuration
It will have +2 change
The ion is Ra2+
d)
P is in 5
So, it can accepts 3 more electrons and attain noble gas configuration
So, it will form P3-
I am allowed to answer only 1 question at a time
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