Home
Class 9
CHEMISTRY
An atom with 3 protons and neutrons will...

An atom with 3 protons and neutrons will have a valency of

A

3

B

7

C

1

D

4

Text Solution

Verified by Experts

The correct Answer is:
C

Given that, number of protons in an atom = 3 and number of neutrons = 4
Electronic configuration of `""_(3)Li = overset(K)2, overset(L)1`
As, it has one valence electrons, therefore its valency is also 1.
Promotional Banner

Topper's Solved these Questions

  • MATTER IN OUR SURROUNDINGS

    NCERT EXEMPLAR|Exercise Matter In Our Surroundings|27 Videos

Similar Questions

Explore conceptually related problems

Nucleus of an atom contains 5 protons and 6 neutrons .The valency of element will be

The nucleus of an atom has 5 protons and 6 neutrons. What would be the (a) atomic number, (b) mass number, (c) the number of electrons, and (d) the number of valence electrons, per atom of this element ?

Name the central part of an atom where protons and neutrons are held together.

The atom of an element has 9 protons, 9 electrons and 10 neutrons. Predict the valency of the element

Q 4 Two atoms are said to be isobars if. * (a) they have same atomic number but different mass number. (b) they have same number of electrons but different number of neutrons (c) they have same number of neutrons but different number of electrons. (d) sum of the number of protons and neutrons is same but the number of protons is different.

The atoms of different elements having same mass number but different atomic number are known as isobars. The sum of protons and neutrons, in the isobars is always different.

An atom contains electrons, protons and neutrons. If the mass of each neutrons is halved, and each electron is doubled, then the atomic mass of ._(12)Mg^(24)

NCERT EXEMPLAR-STRUCTURE OF THE ATOM-Structure Of The Atom
  1. Elements with valency 1 are

    Text Solution

    |

  2. The first model of an atom was given by

    Text Solution

    |

  3. An atom with 3 protons and neutrons will have a valency of

    Text Solution

    |

  4. The electron distribution in an aluminium atom is

    Text Solution

    |

  5. Which of the following in figure do not represent Bohr's model of an a...

    Text Solution

    |

  6. Which of the following statement is always correct?

    Text Solution

    |

  7. Atomic models have been improved over the years. Arrange the following...

    Text Solution

    |

  8. Is it possible for the atom of an element to have one electron, one pr...

    Text Solution

    |

  9. Write any two observation which support the fact that atoms are divisi...

    Text Solution

    |

  10. Will ""^(35)Cl and ""^(37)Cl have different valencies? Justify your an...

    Text Solution

    |

  11. Why did Rutherford select a gold foil in his alpha-ray scattering expe...

    Text Solution

    |

  12. Find out the valency of the atoms represented by the Figure (a) and (b...

    Text Solution

    |

  13. One electron is present in the outermost shell of the atom of an eleme...

    Text Solution

    |

  14. Write down the electron distribution of chlorine atom. How many electr...

    Text Solution

    |

  15. In the atom of an element X, 6 electrons are present in the outermost ...

    Text Solution

    |

  16. What information do you get from the figure about the atomic number, m...

    Text Solution

    |

  17. In response to a question, a student stated that in an atom, the numbe...

    Text Solution

    |

  18. Calculate the number of neutrons present in the nucleus of an element ...

    Text Solution

    |

  19. Match the names of the Scientists given in Column A with their contrib...

    Text Solution

    |

  20. The atomic number of calcium and argon are 20 and 18 respectively, but...

    Text Solution

    |