Home
Class 11
CHEMISTRY
Borax is actually made of two tetrahedra...

Borax is actually made of two tetrahedral and two triangular units joined together and should be written as: `Na_2[B_4O_5(OH)_4].8H_2O` Consider the following statements about borax:
Each boron atom has four B-O bonds
Each boron atom has three B-O bonds
Two boron atoms have four B-O bonds while other two have three B-O bonds
Each boron atom has one - OH groups

A

a,b

B

b,c

C

c,d

D

a,c

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ORGANIC CHEMISTRY: SOME BASIC PRINCIPLES AND TECHNIQUES

    PATHFINDER|Exercise QUESTION BANK|85 Videos
  • PERIODIC CLASSIFICATION OF ELEMENTS AND PERIODIC PROPERTIES

    PATHFINDER|Exercise QUESTION BANK|77 Videos

Similar Questions

Explore conceptually related problems

The formula of borax should be written as Na_2[B_4O_5(OH)_4].8H_2O instead of Na_2B_4O_7. 10H_2O - explain this fact.

In BI_3 molecule distance between two I atoms is found to be 3.54oversetoA also BI_3 has sp^2 hybridised Boron atom if radius of covalently bonded I atom is 1.33 what will be the covalent radius of Boron?

Conformations are different arrangements of atoms that are interconverted by rotation about single bond. In eclipsed conformation the C-H bond on one carbon is directly aligned with C-H bond on the adjacent carbon. The angle that separates a bond on one atom from a bond on a adjacent atom is called a dihedral angle. A staggered conformation with two larger groups 180^@ from each other is called anti. A stagged conformation with two larger group 60^@ from each other is called gauche. Which of the following is gauche conformer ?

Conformations are different arrangements of atoms that are interconverted by rotation about single bond. In eclipsed conformation the C-H bond on one carbon is directly aligned with C-H bond on the adjacent carbon. The angle that separates a bond on one atom from a bond on a adjacent atom is called a dihedral angle. A staggered conformation with two larger groups 180^@ from each other is called anti. A stagged conformation with two larger group 60^@ from each other is called gauche. Identify the most stable conformer of 2-fluoro ethanol among the following :

This question has statement I and Statement II. Of the four choices given after the statements, choose the one that best describes the two Statements. (1) Statement-I is true, Statement-II is true, Statement-II is a correct explanation of Statement-I (2) Statement-I is true, Statement-II is true,Statement-II is not a correct explanation of Statement-I (3)Statement-I is a true , Statement-II is false (4) Statement-I is false, Statement-II is true Statement 1 : The nearly tetrahedral arrangement of the orbitals about the oxygen atom allows each water molecule to form hydrogen bonds with as many as four neighbouring water molecules. Statement 2 : In ice each water molecule forms four hydrogen bonds as each molecule forms four hydrogen bonds as each molecule is fixed in the space.

The element, boron has two isotopes ( ""^(10)B and ""^(11)B ). Calculate the natural abundance o the isotopes of boron if the atomic mass of the element be 10.8.

An organic compound "X" having molecular formula c_6H_7O_7N has 6 carbon atoms in a ring system, two double bonds and also a nitro group as substituent, "X" is

PATHFINDER-P-BLOCK ELEMENTS -QUESTION BANK
  1. Heating an aqueous solution of aluminium chloride to dryness will give...

    Text Solution

    |

  2. While testing BO3^3, there is a green edged flame on heating the salt ...

    Text Solution

    |

  3. Borax is actually made of two tetrahedral and two triangular units joi...

    Text Solution

    |

  4. Specify the coordination geometry around and hybridization of N and B ...

    Text Solution

    |

  5. Which of the following statements is correct?

    Text Solution

    |

  6. Fluorine is more electronegative than either boron or phosphorus. What...

    Text Solution

    |

  7. Aluminium (III) chloride forms a dimer because:

    Text Solution

    |

  8. Structure of Na2B4O7.10H2O contains

    Text Solution

    |

  9. Which of the following compounds is formed in borax bead test?

    Text Solution

    |

  10. The shape of gaseous SnCl2 is

    Text Solution

    |

  11. The percentage of lead in lead pencil is

    Text Solution

    |

  12. Which oxide of lead is used in lead storage batteries, in safety match...

    Text Solution

    |

  13. Ge (II) compounds are powerful reducing agents whereas Pb (IV) compoun...

    Text Solution

    |

  14. PbCl4 exist while PbBr4 and PbI4 do not exist.-Explain.

    Text Solution

    |

  15. Which of the following is most stable?

    Text Solution

    |

  16. Bio gas and producer gas are made up of

    Text Solution

    |

  17. Name the structure of silicates in which three oxygen atoms of [SiO4]^...

    Text Solution

    |

  18. When excess of SnCl2 is added to HgCl2, the substance formed is

    Text Solution

    |

  19. Mg2C3 has the following characteristics

    Text Solution

    |

  20. The number and type of bonds between two carbon atoms in CaC2 are

    Text Solution

    |