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1 kg mole of oxygen (O(2)) has ...........

1 kg mole of oxygen `(O_(2))` has .......... electrons.

A

`6.022xx10^(26)`

B

`16.022xx10^(26)`

C

`16.022xx10^(23)`

D

`16.022xx10^(20)`

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The correct Answer is:
To find the number of electrons in 1 kg mole of oxygen (O₂), we can follow these steps: ### Step-by-Step Solution: 1. **Understand the concept of a mole**: - A mole is a unit that represents a specific number of particles, which is Avogadro's number: \(6.022 \times 10^{23}\) particles. 2. **Determine the number of oxygen atoms in O₂**: - Oxygen (O₂) is a diatomic molecule, meaning each molecule of oxygen contains 2 oxygen atoms. - Each oxygen atom has 8 electrons. Therefore, in one O₂ molecule: \[ \text{Electrons in O₂} = 2 \times 8 = 16 \text{ electrons} \] 3. **Calculate the number of moles in 1 kg mole**: - 1 kg mole means 1000 moles. So: \[ \text{Number of moles} = 1000 \text{ moles} \] 4. **Calculate the total number of O₂ molecules in 1 kg mole**: - Since 1 mole contains \(6.022 \times 10^{23}\) molecules, then 1000 moles will contain: \[ \text{Number of molecules} = 1000 \times 6.022 \times 10^{23} = 6.022 \times 10^{26} \text{ molecules} \] 5. **Calculate the total number of electrons in 1 kg mole of O₂**: - Since each molecule of O₂ has 16 electrons, the total number of electrons in 1 kg mole of O₂ is: \[ \text{Total electrons} = 16 \times 6.022 \times 10^{26} = 9.6352 \times 10^{27} \text{ electrons} \] 6. **Round off the answer**: - We can express the final answer as: \[ \text{Total electrons} \approx 9.6 \times 10^{27} \text{ electrons} \] ### Final Answer: 1 kg mole of oxygen (O₂) has approximately \(9.6 \times 10^{27}\) electrons. ---

To find the number of electrons in 1 kg mole of oxygen (O₂), we can follow these steps: ### Step-by-Step Solution: 1. **Understand the concept of a mole**: - A mole is a unit that represents a specific number of particles, which is Avogadro's number: \(6.022 \times 10^{23}\) particles. 2. **Determine the number of oxygen atoms in O₂**: ...
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MTG IIT JEE FOUNDATION-ATOMS, MOLECULES AND ATOMIC STRUCTURE-EXERCISE (Multiple Choice Questions)
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  2. Which of the following has greatest number of atoms?

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  3. 1 kg mole of oxygen (O(2)) has .......... electrons.

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  4. One mole of hydrogen peroxide (H(2)O(2)) has a mass same as that of

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  5. 1 g atom of nitrogen represents

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  6. How many gram atoms of oxygen are contained in 0.25 mole of Na(2)S(2)O...

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  7. A sample of AIF(3) contains 3.0 xx 10^(24) F^(-) ions. The number of f...

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  8. What is the total number of atoms present in 25.0 mg of camphor, C(10)...

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  9. The ion of an element has 3 positive charges. Mass number of the atom ...

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  10. The isoelectronic species are 1. Na^(+)" " 2. Al^(3+) 3. Mg^(2+...

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  11. Which one of the following is a correct electronic configuration of so...

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  12. Electron was discovered by

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  13. Which of the following elements does not form isotopes?

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  14. Pick out the isobar pair.

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  15. Common hydrogen is also called

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  16. Deuterium and tritium are the isotopes of

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  17. The atomic number of an element X is 19. The number of electrons in it...

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  18. Rutherfords experiments , which established the nuclear model of atom ...

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  19. If there are 12 neutrons in an atom and its atomic number is 11, then ...

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  20. Which of the following species does not have electrons equal to 18?

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