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Which of these is a Dobereiner’s triad?...

Which of these is a Dobereiner’s triad?

A

Na, K and Rb

B

Mg, S and As

C

Cl, Br and I

D

P, S and As

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VMC MODULES ENGLISH-PERIODIC PROPERTIES OF ELEMENTS -In Chapter Exercise-A
  1. An atom has electronic configuration 1s^(2),2s^(2),2p^(6),3s^(2),3d^(3...

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  2. “The physical and chemical properties of the elements are periodic fun...

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  3. The properties of the elements are the periodic function of their atom...

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  4. The 52nd element in the periodic table resembles the

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  5. The element Californium (Atomic Number 98) belongs to the

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  6. The elements with atomic number 10, 18, 36, 54 and 86 are all

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  7. Which of the following pairs has both members from the same period of ...

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  8. If the atomic number of an elements is 33, it will be place in the per...

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  9. Which pair of elements of atomic numbers given below will have similar...

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  10. Which of these is a Dobereiner’s triad?

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  11. An atom has electronic configuration 1s^(2),2s^(2),2p^(6),3s^(2),3d^(3...

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    |

  12. “The physical and chemical properties of the elements are periodic fun...

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    |

  13. The properties of the elements are the periodic function of their atom...

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    |

  14. The 52nd element in the periodic table resembles the

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    |

  15. The element Californium (Atomic Number 98) belongs to the

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    |

  16. The elements with atomic number 10, 18, 36, 54 and 86 are all

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    |

  17. Which of the following pairs has both members from the same period of ...

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  18. If the atomic number of an element is 33, it will be placed in the per...

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  19. Which pair of elements with the atomic numbers as given below have sim...

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  20. Which of these is a Dobereiner’s triad?

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