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saveliy_v [14]
3 years ago
6

Which element has 5 outer electrons in its 3rd shell?

Chemistry
2 answers:
Sloan [31]3 years ago
5 0

Answer:

Z

Explanation:

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on.

...

List of elements with electrons per shell.

Z 5

Element Boron

No. of electrons/shell 2, 3

Group 13

Debora [2.8K]3 years ago
5 0

Answer:

Phosphorus

Explanation:

Phosphorus has 15 total electrons. Its first shell can hold 2 electrons. Its second shell can hold 8 electrons. The remaining 5 electrons are in its third shell (the third shell can hold up to 18 electrons).

2 electrons (1st shell) + 8 electrons (2nd shell) + 5 electrons (3rd shell) = 15 total electrons (the number of electrons P has).

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A student dissolves 3.9g of aniline (C6H5NH2) in 200.mL of a solvent with a density of 1.05 g/mL . The student notices that the
Tresset [83]

Answer:

a. Molarity= M =2.1x10^{-1}M

b. Molality= m=2.0x10^{-1}m

Explanation:

Hello,

In this case, given the information about the aniline, whose molar mass is 93g/mol, one could assume the volume of the solution is just 200 mL (0.200 L) as no volume change is observed when mixing, therefore, the molarity results:

M=\frac{n_{solute}}{V_{solution}} =\frac{3.9g*\frac{1mol}{93g} }{0.2L} =2.1x10^{-1}M

Moreover, the molality:

m=\frac{n_{solute}}{m_{solvent}} =\frac{3.9g*\frac{1mol}{93g} }{0.2L*\frac{1.05kg}{1L} } =2.0x10^{-1}m

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3 years ago
If acid gets on your skin or clothes, wash at once with?
ICE Princess25 [194]
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<h3>What is passive transport?</h3>

Passive transport is a type of membrane transport in which chemicals are moved across cell membranes without using energy. Unlike active transport, which uses cellular energy, passive transport uses the second law of thermodynamics to cause the movement of substances across cell membranes.

<h3>Why is passive transport important?</h3>

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To know more about Passive transport  visit:

brainly.com/question/13542102

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1 year ago
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Nadya [2.5K]

Answer:

CO2 + MgO

Explanation:

We want the number of each element on the Reactants (Left side) to be equal to the number of each element on the Product side (Right side).

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Answer:

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Explanation:

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