Home
Class 9
CHEMISTRY
What happens to an element A if its atom...

What happens to an element A if its atom gains two electrons?

Text Solution

Verified by Experts

It changes to a divalent anion `(A^(2-))`
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND MOLECULES

    DINESH PUBLICATION|Exercise SHORT ANSWER|42 Videos

  • ATOMS AND MOLECULES

    DINESH PUBLICATION|Exercise LONG ANSWER|16 Videos

  • ATOMS AND MOLECULES

    DINESH PUBLICATION|Exercise N.C.E.R.T. END EXERCISE|11 Videos

  • IS MATTER AROUND US PURE

    DINESH PUBLICATION|Exercise LAQs|10 Videos

Similar Questions

Explore conceptually related problems

The atom of an element ( not helium ) contains two electrons in its valence shell . How will the atom complete its octet ?

What will be formed when an atom 'A' gains two electrons?

During the formation of a compound between two atoms A and B. Atom A loses two electrons while atom B gains one electrons. Choose the option with correct formula of the compound formed

The atomic number of an element M is 26. How many electrons are present in the M-shell of the element in its M^(3+) state

A neutral atom of an element has two K, eight L, nine M and two N electrons then electronic configuration of the element is "________"

The atomic number of an element is 8. How many electrons will it gain to form a compound with sodium ?

(a) Define valency of an element. What valency will be shown by an element having atomic number 14 ? (b) What is the relation between the valency of an element and the number of valence electrons in its atoms ? Explain with examples.

DINESH PUBLICATION-ATOMS AND MOLECULES-VERY SHORT ANSWER QUESTIONS
  1. If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the ma...

    Text Solution

    |

  2. What is the valency of calcium in CaCO(3)?

    Text Solution

    |

  3. What happens to an element A if its atom gains two electrons?

    Text Solution

    |

  4. Why is a cation so named?

    Text Solution

    |

  5. An element Z forms an oxide with formula Z,O3. What is its valency?

    Text Solution

    |

  6. The valency of an element A is 4. Write the formula of its oxide.

    Text Solution

    |

  7. An element X has valency 3 while the element Y has valency 2. Write th...

    Text Solution

    |

  8. Formula of the carbonate of a metal M is M(2)CO(3). Write the fomula o...

    Text Solution

    |

  9. What do you understand from the statement "relative atomic mass of sul...

    Text Solution

    |

  10. Calculate the formula unit mass of CaCl(2).

    Text Solution

    |

  11. Which of the following represents the correct chemical formula? (i) ...

    Text Solution

    |

  12. Sample A contains one gram molecules of oxygen molecules and sample B ...

    Text Solution

    |

  13. Gram molecular mass of ammonia (NH(3)) is 17 g Is it correct to regard...

    Text Solution

    |

  14. Give one example each of polyatomic element and polyatomic ion

    Text Solution

    |

  15. Name the element which is used as a reterence for the atomic masses of...

    Text Solution

    |

  16. Four samples of water [H(2)O] are collected from different sources, Ea...

    Text Solution

    |

  17. Identify the cations and anions in the following compounds: (a)CH(3)...

    Text Solution

    |

  18. Classify the following based on atomicity (a) O(3) (b)P(4) (c )Sg.

    Text Solution

    |

  19. Which of the following symbols of elements are incorrect? Write correc...

    Text Solution

    |

  20. Give the example of trivalent cation and monovalent anion. Write the f...

    Text Solution

    |