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An ion has 18 electrons in the outermost...

An ion has 18 electrons in the outermost shell , it is

A

`Cu^(+)`

B

`Th^(4+)`

C

`Cs^(+)`

D

`K^(+)`

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The correct Answer is:
A
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ICSE-STRUCTURE OF ATOM-Objective (MCQ) TYPE Questions
  1. Energy of the third orbit of Bohr's atom is

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  2. If the speed of the electron in the Bohr's first orbit is x, then spee...

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  3. An ion has 18 electrons in the outermost shell , it is

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  4. Which of the following statement(s) is not correct?

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  5. The electrons, identified by quantum numbers n and l(i) n=4,l=1 (ii) n...

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  6. Ground state electronic configuration of nitrogen atom can be represen...

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  7. The number of nodal planes in a p(x) orbital is

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  8. The electronic configuration of an element is 1s^2 2s^2 2p^6 3s^2 3p^6...

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  9. Which of the following statements regarding the electron spin +1/2 and...

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  10. The speed of a 200 g golf ball is 5.0 metre per hour. The wavelength o...

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  11. Energy of H-atom in the ground state is -13.6 eV, hence energy in the ...

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  12. Uncertainty in position of a particle of 25 g in space is 10^(-5) m. H...

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  13. In Balmer series of lines of hydrogen spectrum, the third line from th...

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  14. The de-Broglie wavelength of a tennis ball of mass 60 g moving with a ...

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  15. The orbital angular momentum for an electron revolving in an orbit is ...

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  16. Which of the following sets of quantum numbers is correct for an elect...

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  17. Consider the ground state of Cr atom (Z =24). The numbers of electrons...

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  18. Calculate the wavelength and energy of radiation emitted for the elect...

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  19. In a multi-electron atom, which of the following orbitals described by...

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  20. Uncertainty in the position of an electron ("mass = "9.1 xx 10^(-31)kg...

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