Answer
Verified
390.6k+ views
Hint: In metals moving down the group metallic character increases, so basic nature increases and Be is the least metallic in group 2 elements.
Complete answer:
Use Fajan rule in this case
We can see the charge on cation and anion are the same so it all depends on the size of the cation.
According to Fajan rule as the size of the cation increases the polarizing power decreases and the covalent character decreases or the ionic character increases. Hence basic character increases down the group.
Ba is a large cation so the polarising power is less and hence this will not be the correct option.
Mg is metal and we all know that metal oxides are basic so MgO will not be the correct answer
Ca is a large cation so the polarising power is less and oxides Ca is not much acidic so this will also not be the correct option.
Be is a small cation so the polarising power is high and it forms most acidic oxides and it has the most covalent. So Beo is the most acidic
Hence the correct option is (D) BeO.
Note: Students can make confusion in determining acidic and basic character by using the Fajan rule, make sure to remember that as we go down the group basic character increases and acidic character decreases. therefore BeO is most acidic from all above acid
Complete answer:
Use Fajan rule in this case
We can see the charge on cation and anion are the same so it all depends on the size of the cation.
According to Fajan rule as the size of the cation increases the polarizing power decreases and the covalent character decreases or the ionic character increases. Hence basic character increases down the group.
Ba is a large cation so the polarising power is less and hence this will not be the correct option.
Mg is metal and we all know that metal oxides are basic so MgO will not be the correct answer
Ca is a large cation so the polarising power is less and oxides Ca is not much acidic so this will also not be the correct option.
Be is a small cation so the polarising power is high and it forms most acidic oxides and it has the most covalent. So Beo is the most acidic
Hence the correct option is (D) BeO.
Note: Students can make confusion in determining acidic and basic character by using the Fajan rule, make sure to remember that as we go down the group basic character increases and acidic character decreases. therefore BeO is most acidic from all above acid
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Select the correct plural noun from the given singular class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The sum of three consecutive multiples of 11 is 363 class 7 maths CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How many squares are there in a chess board A 1296 class 11 maths CBSE