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Which element has a valency 1?...

Which element has a valency 1?

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Given below are the electronic configuration of a few elements. (Symbols are not real). A-2,8,8,2 B- 2, 8, 8 C- 2,8,1 D-2,8,7 a) Which od these atoms accepts electron? b) Which is the stable element? c) Write down the molecular formula of the compound formed when the element A and D combine together. d) Which element has a valency of two?

Analyse the given subshell electronic configurations and answer the questions (Symbols are not real) A - [Ne] 3s^2 3p^2 B - [Ne] 3s^2 C - [Ar] 4s^1 D - [Ar] 4s^2 3d^2 a. Which element has higher electronegativity? b. Which element shows various oxidation states? c. Write the total number of p electrons in the element C. d. Which element has ionization energy?

Knowledge Check

  • Which element has smallest size?

    A
    B
    B
    N
    C
    Al
    D
    P

  • Which element has the highest first ionisation potential?

    A
    N
    B
    Ne
    C
    He
    D
    H

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