Home
Class 12
CHEMISTRY
The number of valence electrons in an at...

The number of valence electrons in an atom with the configuration `1s^(2)2s^(2)2p^(6)3s^(2)3p^(2)` is:

A

6

B

5

C

4

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • PERIODIC TABLE & PERIODICITY

    RESONANCE|Exercise Exercise-3|1 Videos

  • P-BLOCK ELEMENTS (HALOGEN & NOBLE GASES)

    RESONANCE|Exercise APSP PART-3|22 Videos

  • QUALITATIVE ANALYSIS

    RESONANCE|Exercise INORGANIC CHMISTRY(Qualitative analysis)|35 Videos

Similar Questions

Explore conceptually related problems

The number of valence electrons in an atom with electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^3 is

The element with electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2) is

The element having the electronic configuration 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(2) is :

name the element with electronic configuration 1s^(2) 2s^(2) 2p^(6)3s^(2)

The element having the electronic configuration 1s^(2),2s^(2)2p^(6),3s^(2)3p^(1) is

Calculate the effective nuclear charge of the last electron in an atom. The electronic configuration is 1s^(2), 2s^(2)2p^(6), 3s^(2)3p^(5) .

The electronic configuration of 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(2) corresponds to

The oxide of an element with electronic configuration 1s^(2) 2s^(2)2p^(6)3s^(2)3p^(3) is:

Which of the following corresponds to the configuration 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6) ?

An element having electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1) will form-

RESONANCE-PERIODIC TABLE & PERIODICITY-Advanced Level Problems
  1. The correct order of increasing first ionization energy is

    Text Solution

    |

  2. The group that has the species correctly listed in the order of decrea...

    Text Solution

    |

  3. The number of valence electrons in an atom with the configuration 1s^(...

    Text Solution

    |

  4. The compound in which Mn has oxidation state of +3 is

    Text Solution

    |

  5. The most abundant element found in the earth's crust is:-

    Text Solution

    |

  6. Einstenium has 11 electrons in the 4f subshell. The number of unpaired...

    Text Solution

    |

  7. Lanthanoid contraction is caused due to:

    Text Solution

    |

  8. The outermost electronic configuration of the most electronegative ele...

    Text Solution

    |

  9. The first ionisation potential of Na,Mg,Al and Si are in the order

    Text Solution

    |

  10. The first four ionization energies of an element are 191, 578, 872, an...

    Text Solution

    |

  11. The number of unpaired electron in Ni^(2+) is

    Text Solution

    |

  12. Europium (Eu) and Terbium (Tb) attain stable 4f^(7) configuration by e...

    Text Solution

    |

  13. 4s orbitals has less energy than 3d orbital

    Text Solution

    |

  14. In the compound Na(2)S(2)O(3), the oxidation state of sulphur is:

    Text Solution

    |

  15. Of the following the ion with the largest size is

    Text Solution

    |

  16. The correct statement for the molecule CsI(3) is

    Text Solution

    |

  17. The transtion metals form complexes that involve central metal atom co...

    Text Solution

    |

  18. The periodic system of the elements in our three-dimensional world is ...

    Text Solution

    |

  19. The periodic system of the elements in our three-dimensional world is ...

    Text Solution

    |

  20. The periodic system of the elements in our three-dimensional world is ...

    Text Solution

    |