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zvonat [6]
3 years ago
11

what is the difference between the number of electrons in an atom of selenium and the number of electrons in an atom of aluminum

Chemistry
1 answer:
igomit [66]3 years ago
7 0

Answer:

The atomic number of Selenium is 34. This means that Selenium possesses 34 electrons.

The atomic number of Aluminium is 13. This means that Aluminium has 13 electrons.

Hence, there is a difference of 21 between the number of electrons in an atom of selenium and the number of electrons in an atom of aluminium.

Selenium has 6 electrons in it's outer most shell whereas aluminium has 3 electrons in its outer most shell. As a result, aluminium will have a greater tendency to lose one of its outer most electrons to become stable.

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Imagine you leave a bottle of something toxic to humans open overnight in a sealed laboratory.
IgorC [24]

Answer:

Argument: It is not Safe

Further support to the argument is given below.

Explanation:

Solution:

Argument: It is not Safe

First of all, we all know the ideal gas law:

PV = nRT

And the Boyle's Law states that , if the pressure is increased then, volume will decrease. and if the volume is increased then pressure will decrease.

V is inversely proportional to Pressure of the gas.

So, in this case, Let's suppose we have toxic solution of methyl alcohol in the bottle which is tightly closed. It means pressure in the bottle is high, hence the volume is less.

If in this scenario someone, leave the bottle open in the laboratory and as it is given that the level of solution will drastically decrease. It means it is volatile in nature and is converted into gaseous form and we know now that the open bottle has now less pressure. Hence the volume of the gas will be higher and now it can spread to every corner of the laboratory. And it is very dangerous.

3 0
3 years ago
The carton fe3+ is formed when
vekshin1

Answer:

The cation Fe3+ is formed when a. an atom of iron loses two electrons.

Explanation:

7 0
3 years ago
What is the name of the covalent compound N5Cl8
Anni [7]

Answer:

Did you put that in right because i've never heard of a compound called that nor is there a compound called that on the internet

Explanation:

You must of put that in wrong

7 0
3 years ago
Water will boil at 50°C if the pressure on the<br> surface of the water is
Pachacha [2.7K]

Water boils when its vapor pressure equals the prevailing atmospheric pressure over the water. In order for water to boil at 50 ºC, the pressure over the water would need to be reduced to a point greater equal to the vapor pressure of the water (92.5 torr).

8 0
3 years ago
Water is a pure substance. Which of the following is true about water?
iogann1982 [59]

Answer: A) a chemical change is required to seperate the elemnts present in it

Explanation:

Water is a compound, since it is the result of combining atoms: hydrogen H and oxigen O. In fact, the chemical formula of water is H_{2}O.

On the other hand, chemically in a compound the atoms must be combined in a fixed ratio by mass. In the case of the water molecule, the ratio is 2:1 (For each oxigen atom there are two hydrogen atoms).

So, if we want to separate the atoms that make up the water molecule, it only will be possible by a chemical change and not by a physical one.

Hence the correct option is A.

8 0
3 years ago
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