JEE Main
- Exam
- JEE Main
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- Chemistry
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- p Block Elements (Group 13 & 14)
JEE Main · Chemistry · p Block Elements (Group 13 & 14)
What are the correct statements about the elements of group 13...
What are the correct statements about the elements of group 13 given below? (I) The stability of +1 oxidation state follows the order (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 In (V) Aluminium is passive to concentrated nitric acid
Options
- AI,III & V only
- BII,IV & V only
- CI,II & IV only
- DIII,IV & V only
Correct answer
A. I,III & V only
Step-by-step solution
Statement (II) is incorrect as Hig has the lowest melting and boiling points instead of because of which it is liquid at R.T.. Statemert (IV) is incorrect de correct order of atomic radius is . This is due to increasing shells down the group and anomalous behaviour of Ga.