Given an element with seven valence electrons, how many chemical bonds will usually form?
2 answers:
Answer : The element is belongs to the group 17 having the seven valence electrons and they will usually form one chemical bonds to another element.
Explanation :
As per given in the question that the element has seven valence electrons that means the seven electrons are present in their outermost energy level or shell.
Form the given information we conclude that, the group number is, 17 (because there are 7 valence electrons in outermost shell).
The elements belongs to group 17 are fluorine, chlorine, bromine and iodine and they are the halogens.
The general electronic configuration of halogens are, that means they have seven valence electrons in their outermost shell and they need only one electrons to complete their octet. So, they will usually form one chemical bonds by accepting one electrons from the other elements.
Hence, the element is belongs to the group 17 having the seven valence electrons and they will usually form one chemical bonds to another element.
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Answer:
Explanation:
The gas ideal law is
PV= nRT (equation 1)
Where:
P = pressure
R = gas constant
T = temperature
n= moles of substance
V = volume
Working with equation 1 we can get
The number of moles is mass (m) / molecular weight (mw). Replacing this value in the equation we get.
or
(equation 2)
The cylindrical container has a constant pressure p
The volume is the volume of a cylinder this is
Where:
r = radius
h = height
(pi) = number pi (3.1415)
This cylinder has a radius, r and height, h so the volume is
Since the temperatures has linear distribution, we can say that the temperature in the cylinder is the average between the temperature in the top and in the bottom of the cylinder. This is:
Replacing these values in the equation 2 we get:
(equation 2)