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Atomic number determines the characteris...

Atomic number determines the characteristic properties of an element-explain.

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Knowledge Check

  • Interstitial compounds are formed when small atoms are trapped inside the crystal lattice of metals. Which of the following is not the characteristic property of interstitial compounds -

    A
    they have high melting points in comparison to pure metals.
    B
    they are very hard.
    C
    they retain metallic conductivity.
    D
    they are chemically very reactive.
    • CHHAYA PUBLICATION-STRUCTURE OF ATOM-EXERCISE (SHORT TYPE QUESTIONS)
    1. Atomic number determines the characteristic properties of an element-e...

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    2. How did Rutherford arrive at the conclusion that the volume occupied b...

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    3. What is mass number? How is it related to atomic number?

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    4. How does mass number differ from atomic mass?

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    5. Indicate the number of electrons, protons and neutrons present in ""(9...

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    6. Frequency of a photon is 1.2xx10^(15)Hz. Calculate its energy in J.

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    7. Write three differences between rugherford's atomic model and Bohr's a...

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    8. Calculate the wavelength of the spectral line having minimum energy in...

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    9. The total energy of an electron in an atom is negative'-what does it s...

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    10. The number of electrons in K, L and M-shell of an atom are 2.8 and 5 r...

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    11. Indicate one application of wave property of electron.

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    12. Heisenberg's uncertainty principle is not applicable to particles havi...

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    13. Write Schrondinger's wave equation and indicate the significance of di...

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    14. Half-filled and fully filled orbitals have extra stability. Explain.

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    15. Copper(I) is diamagnetic but copper(II) is paramagnetic-why?

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    16. An element has the electronic configuration [Ar]3d^(4) at its +3 oxida...

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    17. Calculate the numbe of unpaired electrons in Pd(Z=46).

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    18. Show that the third shell may contain a maximum of 18 electrons.

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    19. Is there any existence of 3f-subshell in any atom?

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    20. How many electrons in the Cl-atom at the most can have value, n+l=3?

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