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3 years ago

Write the full ground-state electron configuration for each: (a) Rb (b) Ge (c) Ar

Chemistry

1 answer:

Natasha_Volkova [10]3 years ago

3 0

Answer:

(a) Rb

$1s^22s^22p^63s^23p^63d^{10}4s^24p^65s^1$

(b) Ge

$1s^22s^22p^63s^23p^63d^{10}4s^24p^2$

$1s^22s^22p^63s^23p^6$

Explanation:

(a) Rb

Atomic number = 37

The electronic configuration is -

$1s^22s^22p^63s^23p^63d^{10}4s^24p^65s^1$

(b) Ge

Atomic number = 32

The electronic configuration is -

$1s^22s^22p^63s^23p^63d^{10}4s^24p^2$

Atomic number- 18

The electronic configuration is -

$1s^22s^22p^63s^23p^6$

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Taking into account the change of units, the pressure of the gas sample is 87.19 kPa.

<h3>What is rule of three</h3>

In first place, the rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

That is, what is intended with it is to find the fourth term of a proportion knowing the other three.

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To solve a direct rule of three, the following formula must be followed, being a, b and c known data and x the variable to be calculated:

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The direct rule of three is the rule applied in this case where there is a change of units.

To perform in this case the conversion of units, you must first know that:

1 atm= 760 mmHg
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So, if 1 atm is 760 mmHg, how many atm equals 654 mmHg?

760 mmHg ⇒ 1 atm

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So: $x=\frac{654 mmHgx1 atm}{760 mmHg}$

Solving:

Now, if 101325 Pa are 1 atm, how many Pa equals 0.86 atm?

1 atm ⇒ 101325 Pa

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So: $x=\frac{0.86 atmx101325 Pa}{1 atm}$

Solving:

Finally, if 1 kPa is 1000 Pa, how many kPa equals 87,192.83 Pa?

1000 Pa ⇒ 1 kPa

87,192.83 Pa ⇒ x

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*Assuming 100% efficiency.

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