Home
Class 12
CHEMISTRY
Among the statements (I -IV) , the corre...

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.

A

(I) , (III) and (IV)

B

(I), (II) and (IV)

C

(I) ,(II) and (III)

D

(II), (III) and (IV)

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • JEE MAINS 2020

    JEE MAINS PREVIOUS YEAR|Exercise CHEMSITRY|25 Videos
  • JEE MAINS

    JEE MAINS PREVIOUS YEAR|Exercise QUESTION|1 Videos
  • JEE MAINS 2021

    JEE MAINS PREVIOUS YEAR|Exercise Chemistry (Section B )|10 Videos

Similar Questions

Explore conceptually related problems

Why Ca has larger atomic radius than Al ?

Among the followingstatements identify correct set of statements (a) size of Be is smaller than Mg (b) Ionisation energy of Be is greater than Al (c) Both Be and Al form covalent compounds readily (d) Both Be & Al does not react with nitrogen

Given reasion: (i) Thermal stability decreases from H_(2)O " to " H_(2)Te (ii) Fluoride ion has higher hydration enthalpy than chloride ion (iii) Nitrogen does not form pentahalide

Al^(3+) has low ionic radius than Mg^(2+) because

With respect to graphite and diamond, which of the statements given below are correct? (i) Graphite is harder than diamond. (ii) Graphite has higher electrical conductivity than diamond. (iii) Graphite has higher thermal conductivity than diamond. Graphite has higher C-C bond order than diamond.

JEE MAINS PREVIOUS YEAR-JEE MAINS 2020-CHEMSITRY
  1. Among the statements (I -IV) , the correct ones are : (I) Be has sma...

    Text Solution

    |

  2. The correct statement with respect to dinitrogen is :

    Text Solution

    |

  3. Consider the following reactions :

    Text Solution

    |

  4. The major product obtained from the following reaction is :

    Text Solution

    |

  5. A solution of two components containing n1 moles of 1^(st) component a...

    Text Solution

    |

  6. The INCORRECT statement is :

    Text Solution

    |

  7. Consider the Assertion and Reason given below. Assertion (A) : Ethe...

    Text Solution

    |

  8. Arrange the following solutions in the decreasing order of pOH : (A...

    Text Solution

    |

  9. Among the sulphates of alkaline earth metals the solubilities of BeSO4...

    Text Solution

    |

  10. The major products of the following reaction are : CH3 -overset(CH...

    Text Solution

    |

  11. The major product of the following reaction is :

    Text Solution

    |

  12. The presence of soluble fluoride ion upto 1 ppm concentration in drink...

    Text Solution

    |

  13. The increasing order of pKb values of the following compounds is :

    Text Solution

    |

  14. Which of the following compounds shows geometrical isomerism ?

    Text Solution

    |

  15. The set that contains atomic numbers of only transition elements , is ...

    Text Solution

    |

  16. The variation of equilibrium constant with temperature is given below ...

    Text Solution

    |

  17. Kraft temperature is the temperature :

    Text Solution

    |

  18. For the reaction Fe2N(s)+(3)/(2)H2(g)=2Fe(s)+NH3(g)

    Text Solution

    |

  19. The species that has a spin -only magnetic moment of 5.9 BM , is : (...

    Text Solution

    |

  20. The lanthanoid that does NOT show +4 oxidation stat is :

    Text Solution

    |

  21. Consider the following reaction A to P1, B to P2 , C to P3 , D to P4...

    Text Solution

    |