The formula of the binary compound formed from the given pairs of elements in each case is to be stated. Concept introduction: The oxidation state of an element corresponds to the group number of that element. In case of non-metals, the oxidation state can be calculated as, group number − 8 . While naming an ionic compound, the cation is named first followed by the naming of the anion. If the cation exhibits more than one oxidation state then the current oxidation state of the cation is to be mentioned. To determine: The formula of of chromium (III) hydroxide
The formula of the binary compound formed from the given pairs of elements in each case is to be stated. Concept introduction: The oxidation state of an element corresponds to the group number of that element. In case of non-metals, the oxidation state can be calculated as, group number − 8 . While naming an ionic compound, the cation is named first followed by the naming of the anion. If the cation exhibits more than one oxidation state then the current oxidation state of the cation is to be mentioned. To determine: The formula of of chromium (III) hydroxide
Solution Summary: The author explains the formula of the binary compound formed from the given pairs of elements in each case.
Interpretation: The formula of the binary compound formed from the given pairs of elements in each case is to be stated.
Concept introduction: The oxidation state of an element corresponds to the group number of that element. In case of non-metals, the oxidation state can be calculated as,
group number−8. While naming an ionic compound, the cation is named first followed by the naming of the anion. If the cation exhibits more than one oxidation state then the current oxidation state of the cation is to be mentioned.
To determine: The formula of of chromium (III) hydroxide
(b)
Interpretation Introduction
Interpretation: The formula of the binary compound formed from the given pairs of elements in each case is to be stated.
Concept introduction: The oxidation state of an element corresponds to the group number of that element. In case of non-metals, the oxidation state can be calculated as,
group number−8. While naming an ionic compound, the cation is named first followed by the naming of the anion. If the cation exhibits more than one oxidation state then the current oxidation state of the cation is to be mentioned.
To determine: The formula of of magnesium cyanide
(c)
Interpretation Introduction
Interpretation: The formula of the binary compound formed from the given pairs of elements in each case is to be stated.
Concept introduction: The oxidation state of an element corresponds to the group number of that element. In case of non-metals, the oxidation state can be calculated as,
group number−8. While naming an ionic compound, the cation is named first followed by the naming of the anion. If the cation exhibits more than one oxidation state then the current oxidation state of the cation is to be mentioned.
To determine: The formula of of lead (IV) carbonate
(d)
Interpretation Introduction
Interpretation: The formula of the binary compound formed from the given pairs of elements in each case is to be stated.
Concept introduction: The oxidation state of an element corresponds to the group number of that element. In case of non-metals, the oxidation state can be calculated as,
group number−8. While naming an ionic compound, the cation is named first followed by the naming of the anion. If the cation exhibits more than one oxidation state then the current oxidation state of the cation is to be mentioned.
OGive the formula of the following compounds:
a. Cobalt(III) sulfite
b. triphosphorus pentoxide
c. calcium selenide
The substance, CoCl,, is useful as a humidity indicator because it changes from pale blue to pink
as it gains water from moist air. What is its name?
Select one:
a. cobalt(II) chloride
b. cobalt dichloride
c. cobalt chloride
d. copper(II) chloride
е.
cobaltic chloride
1. Use your knowledge of the element groups in the periodic table to determine
the formula for a compound containing potassium (K) and bromine (Br).
2. Determine the formula for a compound containing cesium (Cs) and sulfur (S).
3. Write an equation for the formation of the following compounds from their
ions:
a. BeSe
b. Na P
c. Potassium sulfide
d. Calcium chloride
-Salts are lonic Compounds
1. Why are ions formed by gaining or losing electrons? What would happen to an atom if a
proton were removed?
2. How does electron transfer explain salt formation?
BR₂
Focus