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Talja [164]
3 years ago
11

Which statement is correct about the location of electrons in an atom according to the Quantum mechanical model? A) Electrons ar

e located inside the nucleus. B) Electrons are located in the cloud-like areas around the nucleus. C) Electrons are located in orbits around the nucleus. D) Electrons are located at great distances from the nucleus.
Chemistry
1 answer:
katrin2010 [14]3 years ago
4 0

Answer:

B) Electrons are located in the cloud-like areas around the nucleus.

Explanation:

The quantum mechanical model of the atom does not consider the path through which an electron travels. It rather estimates the probability of where electrons can be found at each energy level.

The region of maximum probability of where an electron is located is sometimes called an electron cloud or orbital. Each orbital of an atom and the electrons accomodated are described completely by a set of four quantum numbers.

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2 years ago
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Answer: 1145.8 years

Explanation:

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First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{5720\text{years}}

k=1.21\times 10^{-4}\text{years}^{-1}

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 1.21\times 10^{-4}\text{years}^{-1}

t = age of sample  = ?

a = let initial amount of the reactant  = 100 g

x = amount decayed = 75 g

a - x = amount left after decay process  = 100 - 75 = 25g

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

t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}

t=1145.8years

8 0
3 years ago
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What is Aqua Auras mineral family/class?
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I hope this answer will help you. Have a nice day !

5 0
2 years ago
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