JEE MAIN - Chemistry (2020 - 3rd September Evening Slot - No. 15)
Among the statements (I – IV), the correct ones
are:
(I) Be has smaller atomic radius compared to Mg.
(II) Be has higher ionization enthalpy than Al.
(III) Charge/radius ratio of Be is greater than that of Al.
(IV) Both Be and Al form mainly covalent compounds.
(I) Be has smaller atomic radius compared to Mg.
(II) Be has higher ionization enthalpy than Al.
(III) Charge/radius ratio of Be is greater than that of Al.
(IV) Both Be and Al form mainly covalent compounds.
(I), (II) and (IV)
(II), (III) and (IV)
(I), (III) and (IV)
(I), (II) and (III)
Explanation
Be < Mg (atomic radius)
Be > Al (I.E1 greater than Al because of fully filled valence shell of Be)
Charge/radius ratio of Be is less than that of Al.
Both Be and Al form mainly covalent compound.
Be > Al (I.E1 greater than Al because of fully filled valence shell of Be)
Charge/radius ratio of Be is less than that of Al.
Both Be and Al form mainly covalent compound.
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