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hodyreva [135]
3 years ago
8

State the postulate of Bohr theory

Chemistry
1 answer:
KengaRu [80]3 years ago
4 0

Answer:

Bohr's model of the hydrogen atom is based on three postulates:

1) An electron moves around the nucleus in a circular orbit,

2) An electron's angular momentum in the orbit is quantised,

3) The change in an electron's energy as it makes a quantum jump from one orbit to another is always accompanied by the emission or absorption of a photon. Bohr's model is semi-classical because it combines the classical concept of electron orbit (postulate 1) with the new concept of quantisation ( postulates 2 and ).

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Name the reaction type & mechanism of the following reactions:
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Answer:

MECHANISM:

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4 0
2 years ago
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cluponka [151]

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8 0
2 years ago
Write a balanced equation for the following:
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(ANS1)— P4 + 5O2 ---> 2P2O5

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2 years ago
An atom of gold has a mass of 3.271 x 10-22g. How many atoms of gold are in 5.00g of gold?
rosijanka [135]
To get the number of gold atoms, you have to divide the mass of the gold by the mass of the gold atom. It follows this simple equation  \frac{mass of gold}{mass of gold atom}. 

Let x be the number of gold atoms. Plug in the values to a calculator.

x = \frac{5.00g}{3.271 x 10-22g}
Both have the same units so the unit gram(g) can be cancelled. 
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3 0
3 years ago
85g=kg?<br> Unit conversion.
Paraphin [41]

Answer:

0.085 kg

Explanation:

1 g=0.001 kg  OR 1 kg=1000 g

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3 0
2 years ago
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