Home
Class 9
CHEMISTRY
Which of the following symbols of elemen...

Which of the following symbols of elements are incorrect? Give their correct symbols.
Cobalt CO
Carbon c
c) Aluminium AL
d) Helium He
e) Sodium So

Text Solution

Verified by Experts

a) Cobalt CO is incorrect symbol. Its correct symbol is Co.
b) Carbon c is incorrect symbol. Its correct symbol is C.
c) Aluminium AL is incorrect symbol. Its correct symbol is Al.
e) Sodium So is incorrect symbol. Its correct symbol is Na. (it is delivered from Latin name 'Natrium').
d) Helium, He is the correct symbol.
Promotional Banner

Topper's Solved these Questions

  • IS MATTER AROUND US PURE

    NCERT EXEMPLAR|Exercise Is Matter Around Us Pure|42 Videos

Similar Questions

Explore conceptually related problems

Which of the following symbols of elements are incorrect? Write correct symbols (a) Iron (lr) (6) Gold (Au) () Manganese (M) (d) Potassium (Po) (e) Zinc (ZN) F Calcium (Ca)

Which of the following is the correct symbol for cobalt, CO or Co ?

Which of the following elements are present in all proteins? A. Carbon B. Hydrogen C. Oxygen D. Nitrogen

Which of the following match is/are correct regarding B, Al, C and Si elements?

State whether the following statement is true or false : The symbol of element cobalt is CO .

What do the following symbols used in the topic on heredity represent ? (a) TT (b) tt (c) XX (d) XY

Give the formulae of the compounds formed from the following sets of elements. a) Calcium and fluorine b) Hydrogen and sulphur c) Nitrogen and hydrogen d) Carbon and chlorine e) Sodium and oxygen f) Carbon and oxygen

NCERT EXEMPLAR-ATOMS AND MOLECULES-Atoms And Molecules
  1. Write the cations and anions present (if any) in the following compoun...

    Text Solution

    |

  2. Give the formulae of the compounds formed from the following sets of e...

    Text Solution

    |

  3. Which of the following symbols of elements are incorrect? Give their c...

    Text Solution

    |

  4. Give the chemical formulae for the following compounds and compute the...

    Text Solution

    |

  5. State the number of atoms present in each of the following chemical sp...

    Text Solution

    |

  6. What is the fraction of the mass of water due to neutrons?

    Text Solution

    |

  7. Does the solubility of a substance change with temperature? Explain wi...

    Text Solution

    |

  8. Classify each of the following on the basis of their atomicity. A) F(2...

    Text Solution

    |

  9. You are provided with a fine white coloured powder which is either sug...

    Text Solution

    |

  10. Calcualte the number of moles of magnesium present in a magnesium ribb...

    Text Solution

    |

  11. Veriy by calculating that a) 5 moles of CO(2) and 5 moles of H(2)O d...

    Text Solution

    |

  12. Find the ratio by mass of the combining elements in the following comp...

    Text Solution

    |

  13. Calcium chlroide when dissolved in water dissociates into its ions acc...

    Text Solution

    |

  14. The difference in the mass of 100 moles of each of sodium atoms and so...

    Text Solution

    |

  15. Cinnabar (HgS) is a prominent ore of mercury. How many grams of mercur...

    Text Solution

    |

  16. The mass of one steel screw is 4.11 g. Find the mass of the of one mol...

    Text Solution

    |

  17. A sample of vitamin C is known to contain 2.58 xx 10^(24) oxygen atoms...

    Text Solution

    |

  18. Raunak took 5 moles of carbon atoms in a container and Krish also took...

    Text Solution

    |

  19. Fill in the missing data in the following table.

    Text Solution

    |

  20. The visible universe is estimated to contain 10^(22) stars. How many m...

    Text Solution

    |