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Let mass of electron is half mass of proton is two times and mass of neutron is three fourth of original then find out new atomic weight of a O16 atom?
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Let mass of electron is half mass of proton is two times and mass of n...
Calculating the New Atomic Weight of an O16 Atom


Understanding the Masses of Subatomic Particles


  • The mass of an electron is approximately 0.00054858 atomic mass units (amu).

  • The mass of a proton is approximately 1.007276 amu.

  • The mass of a neutron is approximately 1.008665 amu.

  • An O16 atom has 8 protons, 8 neutrons, and 8 electrons.



Calculating the Original Atomic Weight of O16


  • The atomic weight of an element is the sum of the masses of its protons, neutrons, and electrons.

  • For O16, the original atomic weight is:

    • 8 protons x 1.007276 amu = 8.058208 amu

    • 8 neutrons x 1.008665 amu = 8.06932 amu

    • 8 electrons x 0.00054858 amu = 0.00438864 amu

    • Total = 16.13291664 amu





Calculating the New Masses of Subatomic Particles


  • The new mass of an electron is still approximately 0.00054858 amu.

  • The new mass of a proton is twice the mass of an electron, or approximately 0.00109716 amu.

  • The new mass of a neutron is three fourths the original mass of a neutron, or approximately 0.75649875 amu.



Calculating the New Atomic Weight of O16


  • The new atomic weight of O16 is:

    • 8 protons x 0.00109716 amu = 0.00877728 amu

    • 8 neutrons x 0.75649875 amu = 6.05199000 amu

    • 8 electrons x 0.00054858 amu = 0.00438864 amu

    • Total = 6.06515692 amu





Conclusion

The new atomic weight of an O16 atom, given the new masses of subatomic particles, is 6.06515692 amu.
Community Answer
Let mass of electron is half mass of proton is two times and mass of n...
Answer : The new atomic weight of oxygen atom changes by 37.5%

Explanation :

The mass of electron is negligible as compared to that of proton and neutron. Therefore we will neglect the change in the mass of electron.

Mass of proton is 1 amu and mass of neutron is 1 amu.

Oxygen atom contains 8 protons and 8 neutrons.

Mass of O atom = 8p + 8n

Mass of O atom = 8 x 1 amu + 8 x 1 amu = 16 amu

Original mass of O atom is 16 amu.

Mass of proton becomes two times of its original.

Therefore new mass of proton is 2 amu

Mass of neutron changes to 3/4 of its original.

Therefore new mass of neutron is 0.75 amu.

New mass of O atom = 8p + 8n

New mass of O atom= 8x 2amu + 8 x 0.75 amu

New mass of O atom = 22 amu.

The new mass of oxygen atom would be 22 amu.

% increase in the mass can be calculated as

% increase = Change in mass / Original mass

% increase =

% increase = 37.5%

The mass will increase by 37.5%.
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Let mass of electron is half mass of proton is two times and mass of neutron is three fourth of original then find out new atomic weight of a O16 atom?
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