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    • Posted by Monu Pathak 8 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Neha Garg 8 years ago

    Potential difference between 2 terminals of battery when circuit is open

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    Naveen Sharma 8 years ago

    Electromotive force, also called emf (denoted and measured in volts), is the voltage developed by any source of electrical energy such as a battery or dynamo. It is generally defined as the electrical potential for a source in a circuit.

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    • Posted by Gaurav Puri 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Sakshi Shrivastava 8 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Srishti Thakur 8 years ago

    The 4th-electrons have poor shielding effect,so effective nuclear charge experienced by the outer electrons increases.This result in a steady decrease in size of lanthanides. This is known as lanthanoid contraction

    1Thank You

    Jayash Pandey 8 years ago

    Contraction means the decrease in size. So, lanthanide contraction means the decrease in size of the elements down the group(lanthanide).

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    • Posted by Vikas Singh 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Naveen Sharma 8 years ago

    Consequence of Lanthanide Contraction:

    • Separation of Lanthanides:Due to the similar sizes of the lanthanides, it is difficult to separate them but due to lanthanide contraction their properties slightly vary (such as ability to form complexes). The variation in the properties is utilized to separate them.
    • Basic Strength of Hydroxide: Due to the lanthanide contraction, size of M3+ions decreases and there is increase in covalent character in M–OH and hence basic character decreases.
    • Similarity of second and third transition series:The atomic radii of second row transition elements are almost similar to those of the third row transition elements because the increase in size on moving down the group from second to third transition elements is cancelled by the decrease in size due to the lanthanide contraction.

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    • Posted by Kumar Sudhansu 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Renu Sharma 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Renu Sharma 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Qudrat Bishmbu 8 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Aastika Gupta 8 years ago

    The nitrogen in NH3 has lone pairs available for donation.

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    Aditi Soni 8 years ago

    Because it has lone pair on nitrogen atom

    1Thank You

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    • Posted by Ekta Dwivedi 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Bio Tech 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Jayash Pandey 8 years ago

    Organic chemistry has 21 marks. So, inorganic has 70-21 = 49 marks.

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    • Posted by Abhinay Kumar 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Jatin Gupta 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Nitin Pandey 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Mayuk Bhatt 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Astha Srivastava 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Astha Srivastava 8 years ago

    In cubic 23,rhombohedral 14,hexagonal 14,tetragonal 10,orthorhombic 6,monoclinic 2,triclinic 0 elements of symmetry exists.

    4Thank You

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    • Posted by Reetendra Tiwari 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Truth Stone 8 years ago

    2

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    • Posted by Himanshu Joshi 8 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Yuthika Yadav 8 years ago

    R-CH2-COOH give R-CH(X)-COOH in presence of (1)Red P/X2 (2) H2O on heating

    1Thank You

    Jatin Saini 8 years ago

    R-CH2-COOH --------->R-CHX-COOH X=Cl,Br In presence of red P /H2O

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    • Posted by Shubham Kumar 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Abhinay Ab 8 years ago

    Due to small intermolecular distance and high intermolecular force.

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    • Posted by Dampy Singh 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yuthika Yadav 8 years ago

    Electronic conductance is due to electrons as in metals while ionic conductance is due to ions like Na+ , etc. in electrolytes

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    • Posted by Anjali Kumari 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nitin Pandey 8 years ago

    Due to greator electronegative of pcl5

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    • Posted by Sidharth Bhasin 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Simran Saharawat 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Suruchi Barnwal 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Karan Rawat 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Shakti Rana 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Truth Stone 8 years ago

    Bcoz nitrogen exist in discrete molecules like N2 which has weakest Intermolecular Forces

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    • Posted by Sukhpal Brar 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Bhanu Partap 8 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rohan Saini 8 years ago

    O. O ||. || S. S // | \___O--O___/ | \\. O. O. H. O \ H

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    • Posted by Abhi Sharma 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Jaya Maheshwari 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Aayu Singh 8 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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