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lilavasa [31]
3 years ago
14

Which hypothesis of Thomson's atomic model was later found to be not true by Niels Bohr and why

Chemistry
1 answer:
Charra [1.4K]3 years ago
8 0

The hypothesis of Thomson's atomic model that was later found to be not true by Niels Bohr is that the atom was made up of uniform spheres of positively charged matter in which electrons are embedded.

That the atom was made up of uniform spheres of positively charged matter in which electrons are embedded.

In about 1900 Thomson proposed the atomic model that atom was made up of uniform spheres of positively charged matter in which electrons are embedded. The atom was a sphere of positive charge surrounded by negative charges lumped up together like in a plum pudding.

In 1903  Niels Bohr and Rutherford proposed a model which explained the scattering of electrons by gold foil that the atoms was made up of empty space and a positively charged nucleus surrounded by an electron in what they called a planetary model.

The reason why the Thomson atomic model was found not to be true by Niels Bohr is that it could not explain the scattering of atoms by the gold foil. In the gold foil experiment, most of the electrons fired at the gold foil passed through the atom but some were deflected showing that the atom was made up mostly of empty space and concentrated at the center.

So, hypothesis of Thomson's atomic model was later found to be not true by Niels Bohr is that the atom was made up of uniform spheres of positively charged matter in which electrons are embedded.

Learn more about Thomson's atomic model here:

brainly.com/question/20297635

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How many mL of 0.200M KI would contain 0.0500 moles of KI? <br><br> Please explain and show work.
valina [46]

Answer:

250ml

Explanation:

call it V

V*0.2=0.05 (moles)

so V=0.05/0.2 = 0.25l = 250ml

4 0
3 years ago
Read 2 more answers
Please help.This is due tomorrow.It's worth 2 grades.Please help.God bless u.Please and thankyou so much.
Daniel [21]

Answer:

1. False - compression

2. True

3. False - transform faults

4. False - horizontally

5. True

6. False- perpendicular

7. False - away from

8. False - increase

9. True

10. True

Explanation:

1. Mountains, oceanic trenches, and rift valleys are created by tension and compression stress. They are formed by divergent and convergent boundaries. Compression stress occurs when plates are pushing against each other, while tension stress occurs when the plates are pulling away from each other.

**Shear stress happens when the plates grind against each other. Often found in transform boundaries.

2. Transform faults happen when two plates glide or slide against each other. These areas are called transform boundaries. Transform faults occur in the ocean. When these boundaries are formed on land, they are called strike-slip faults.

3. Shear stress that occur in transform boundaries produce transform faults. These faults are usually identified by long faults and ridges. Sometimes small ponds form in the cracks due to deposition.

*** Rift valleys are produced by divergent boundaries or tension stress, when the plates are pulled apart.

4. Transform boundaries are formed when two plates slides against each other. Transform faults are formed in these boundaries and the movement of the plates are horizontal.

*** They do not move vertically.

5-6. Mid-oceanic ridges are segmented or divided by transform faults. The transform faults in the mid-oceanic ridges are perpendicular to the oceanic ridges. They separate them into distinct segments and can run across for hundreds of kilometers

7. New faults form as they move away from the ridges. Mid oceanic ridges are formed when the plates move apart, pushing the seafloor outwards and along with that, the transform faults. When new crust however overlaps the transform fault, they stop moving against each other, and start moving side by side, creating a crack.

8. Transform faults increase in size as long as the plates continue to move. The areas of transform faults, especially in the surface create earthquake faults.

9. Faults at the surface can be part of a larger underground system. Some faults can cut across continental crusts. These faults are created by different geological processes, like compression stress from convergent boundaries, tension stress from divergent boundaries, and shear stress from transform boundaries.

10. Fault zones are areas where you can find different faults formed, relatively close to each other. The faults in fault zones can be shallow or deeper like the fault zone Sierra Madre.

6 0
4 years ago
What is the formula for the compound?
4vir4ik [10]

Answer:

the correct answer is CO2 (the last one)

7 0
3 years ago
Read 2 more answers
9)
Trava [24]

Answer : The volume of gas will be, 113.5 L

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 60 atm

P_2 = final pressure of gas = 30 atm

V_1 = initial volume of gas = 29 L

V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 115 K

T_2 = final temperature of gas = 225 K

Now put all the given values in the above equation, we get:

\frac{60atm\times 29L}{115K}=\frac{30atm\times V_2}{225K}

V_2=113.5L

Therefore, the volume of gas will be, 113.5 L

7 0
3 years ago
5) What is the difference between CO2 and XeCl2? The difference between SCl2, SCl4, and SCl6?
nadezda [96]

CO₂ has 4 + 2(6) = 16 valence electrons

CO₂ have linear molecular structures with a 180° bond angle. CO₂ is nonpolar  because the individual bond dipoles cancel each other out

XeCl₂ has 8 + 2(7) = 22 valence electrons.

There are five pairs of electrons about the central Xe atom. The structure will be based  on a trigonal bipyramid geometry. The most stable arrangement of the atoms in XeCl₂ is  a linear molecular structure with a 180° bond angle. It is nonpolar because the Xe−Cl bond dipoles  and lone pairs around Xe are arranged in such a manner that they cancel each other out.

(b)

SCl₆ is nonpolar because it has 6 bonding pairs and no lone pairs, giving it an octahedral shape. When you draw the vectors, you can see that the resultant is 0, making it nonpolar.

SCl₄ on the other hand is polar because it has 4 bonding pairs and one lone pair, giving it a trigonal pyramidal shape.

SCl₂ is also polar due to reasons similar to those in the case of SCl₄.

7 0
3 years ago
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