Answer
Verified
37.5k+ views
Hint: Generally metal reacts with oxygen to give basic compounds of oxygen or basic oxide. We know the basicity of an oxide depends on the electropositive character of the central metal atom. Also as we move from top to bottom of the periodic table the electropositive character of an element increases which means basicity also increases.
Complete Step by Step Solution:
Oxides are binary compounds produced by the reaction of oxygen with metals and non-metals. We can classify oxides into three main categories: acidic, basic, and amphoteric respectively based on their acid-base properties.
Generally, acidic oxides produce acidic solutions with water and basic oxides produce basic solutions with water. Amphoteric oxides react either with acid as well as a base to form salt and water. As we move from left to right in the periodic table, the non-metallic character of an element increases, and thereby acidity of an oxide increases but the metallic character decreases, and thereby basicity of an oxide decreases. Whenever we move from top to bottom in the periodic table, the non-metallic character decreases and the metallic character or electropositive character increases.
Now both $S{{b}_{2}}{{O}_{3}}$ and $A{{l}_{2}}{{O}_{3}}$ are amphoteric oxides since they can act either as acid or as a base to form salt and water.
$Se$ in $Se{{O}_{2}}$ belongs to group 16, having an oxidation state $(+4)$ and $Se$ is non-metal, and forms acidic oxide $Se{{O}_{2}}$. The oxidation state of metal in metallic oxide decreases, thereby increasing its basic nature. $Bi$in $B{{i}_{2}}{{O}_{3}}$ belongs to group 15, having an oxidation state $(+3)$. Therefore $B{{i}_{2}}{{O}_{3}}$ is the most basic oxide, and the metallic character of $Bi$ increases as we go down the group.
Thus, the correct answer is (B).
Note: Metal oxides are basic because they react with dilute acids to form salts and water. Since the oxides of groups one and two are strongly alkaline in nature, group one is called an alkali metal and group two is called an alkaline earth metal.
Complete Step by Step Solution:
Oxides are binary compounds produced by the reaction of oxygen with metals and non-metals. We can classify oxides into three main categories: acidic, basic, and amphoteric respectively based on their acid-base properties.
Generally, acidic oxides produce acidic solutions with water and basic oxides produce basic solutions with water. Amphoteric oxides react either with acid as well as a base to form salt and water. As we move from left to right in the periodic table, the non-metallic character of an element increases, and thereby acidity of an oxide increases but the metallic character decreases, and thereby basicity of an oxide decreases. Whenever we move from top to bottom in the periodic table, the non-metallic character decreases and the metallic character or electropositive character increases.
Now both $S{{b}_{2}}{{O}_{3}}$ and $A{{l}_{2}}{{O}_{3}}$ are amphoteric oxides since they can act either as acid or as a base to form salt and water.
$Se$ in $Se{{O}_{2}}$ belongs to group 16, having an oxidation state $(+4)$ and $Se$ is non-metal, and forms acidic oxide $Se{{O}_{2}}$. The oxidation state of metal in metallic oxide decreases, thereby increasing its basic nature. $Bi$in $B{{i}_{2}}{{O}_{3}}$ belongs to group 15, having an oxidation state $(+3)$. Therefore $B{{i}_{2}}{{O}_{3}}$ is the most basic oxide, and the metallic character of $Bi$ increases as we go down the group.
Thus, the correct answer is (B).
Note: Metal oxides are basic because they react with dilute acids to form salts and water. Since the oxides of groups one and two are strongly alkaline in nature, group one is called an alkali metal and group two is called an alkaline earth metal.
Recently Updated Pages
To get a maximum current in an external resistance class 1 physics JEE_Main
If a wire of resistance R is stretched to double of class 12 physics JEE_Main
Let f be a twice differentiable such that fleft x rightfleft class 11 maths JEE_Main
Find the points of intersection of the tangents at class 11 maths JEE_Main
For the two circles x2+y216 and x2+y22y0 there isare class 11 maths JEE_Main
The path difference between two waves for constructive class 11 physics JEE_MAIN
Other Pages
Differentiate between homogeneous and heterogeneous class 12 chemistry JEE_Main
The mole fraction of the solute in a 1 molal aqueous class 11 chemistry JEE_Main
In the given circuit the current through the 5mH inductor class 12 physics JEE_Main
Explain the construction and working of a GeigerMuller class 12 physics JEE_Main
In a family each daughter has the same number of brothers class 10 maths JEE_Main
Identify which of the above shown graphs represent class 12 physics JEE_Main