TS EAMCET · Chemistry · p Block Elements (Group 13 & 14)
What are the correct statements about the elements of group 13 given below? (I) The stability of +1 oxidation state follows the order \(\mathrm{T} 1>\mathrm{In}>\mathrm{Ga}\) (II) Boron has the lowest melting point and boiling point as it is a non-metal (III) Boron shows a maximum covalency of 4 in its compounds (IV) The order of atomic radius is \(\mathrm{Ga}>\mathrm{Al}>\) In (V) Aluminium is passive to concentrated nitric acid
- A I,III & V only
- B II,IV & V only
- C I,II & IV only
- D III,IV & V only
Answer & Solution
Correct Answer
(A) I,III & V only
Step-by-step Solution
Detailed explanation
Statement (II) is incorrect as Hig has the lowest melting and boiling points instead of \(\mathrm{B}\) because of which it is liquid at R.T.. Statemert (IV) is incorrect de correct order of atomic radius is \(\mathrm{Ga} < \mathrm{Al} < \mathrm{In}\). This is due to increasing…
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