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    • Posted by Monu Pathak 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Neha Garg 8 years, 3 months ago

    Potential difference between 2 terminals of battery when circuit is open

    0Thank You

    Naveen Sharma 8 years, 3 months 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, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Sakshi Shrivastava 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Srishti Thakur 8 years, 3 months 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, 3 months 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, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Naveen Sharma 8 years, 3 months 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, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Renu Sharma 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Renu Sharma 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Qudrat Bishmbu 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Aastika Gupta 8 years, 3 months ago

    The nitrogen in NH3 has lone pairs available for donation.

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    Aditi Soni 8 years, 3 months ago

    Because it has lone pair on nitrogen atom

    1Thank You

    ANSWER

    • Posted by Ekta Dwivedi 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Bio Tech 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Jayash Pandey 8 years, 3 months ago

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

    1Thank You

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    • Posted by Abhinay Kumar 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Jatin Gupta 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Nitin Pandey 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Mayuk Bhatt 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Astha Srivastava 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Astha Srivastava 8 years, 3 months 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, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Truth Stone 8 years, 3 months ago

    2

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    • Posted by Himanshu Joshi 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Yuthika Yadav 8 years, 3 months 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, 3 months ago

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

    4Thank You

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    • Posted by Shubham Kumar 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Abhinay Ab 8 years, 3 months ago

    Due to small intermolecular distance and high intermolecular force.

    3Thank You

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    • Posted by Dampy Singh 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yuthika Yadav 8 years, 3 months 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, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nitin Pandey 8 years, 3 months ago

    Due to greator electronegative of pcl5

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    • Posted by Sidharth Bhasin 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Simran Saharawat 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Suruchi Barnwal 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Karan Rawat 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Shakti Rana 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Truth Stone 8 years, 3 months ago

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

    1Thank You

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    • Posted by Sukhpal Brar 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Bhanu Partap 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rohan Saini 8 years, 3 months ago

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

    1Thank You

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    • Posted by Abhi Sharma 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Jaya Maheshwari 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
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    • Posted by Aayu Singh 8 years, 3 months ago

    CBSE > Class 12 > Chemistry
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