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allochka39001 [22]
3 years ago
10

What is the name given to the tiny clump of positive material at an atom’s center

Chemistry
1 answer:
Mariana [72]3 years ago
7 0
The answer will be the Bohr model
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An unknown gas is found to diffuse through a porous membrane 4.11 times more slowly than h2 what is the molecular weight of the
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To answer this question, you need to know <span>Graham's Law of Effusion/Diffusion formula. In this formula, the rate of diffusion/effusion would be influenced by the mass. As the molecule has bigger mass, the rate should be slower because it will be harder to pass the membrane. The calculation should be:</span>
<span>Rate 1 / Rate 2 = √[M2/M1] 
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Which of the following could be the subsh
andreev551 [17]

Answer:

2s^2 2p^2

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Group 4A contains a total of 4 electrons for each atom in their valence shell. Filling the orbital diagram, let's say, for carbon, notice that when we start with period 2, we have two elements in the s-block, that is, lithium and beryllium. They correspond to the two s electrons that belong to the valence shell of carbon.

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The best and most correct answer among the choices provided by your question is the fourth choice.

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I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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