Electron configuration
an element A has 3 shells and has 3 valence electrons
so electron configuration of A: 1s², 2s², 2p⁶, 3s², 3p¹
will tend to lose 3 electron to form a cation: A³⁺
a. Nitrate of A
A(NO₃)₃
b. Chloride of A
ACl₃
c. Oxide of A
A₂O₃
The elements on the periodic table are listed in increasing atomic number.
Hydrogen is the first element, and has an A.N. of 1. Also, its very interesting how it doesn't need 8 valence electrons to be stable.
The second element is Helium, which has an A.N (atomic number) of two.
A gas can be produced when you boil water (steam). This isn't classified as a chemical change, though. This is because a new substance is not formed, the water just changes physical states from liquid to gas
Answer:
Explanation:
From the given problem, we are to find the factor number by which the volume of the compressed gas has changed through.
We apply Boyle's law to this problem because the condition of the reaction stipulates a constant temperature.
Boyle's law states "the volume of a given mass of gas is inversely proportional to its pressure provided that temperature remains constant". Mathematically, it is expressed as:
P₁V₁ = P₂V₂
P₁ is initial pressure on the gas
V₁ is the initial volume of the gas
P₂ is the final pressure of the gas
V₂ is the final volume of the gas
From the problem, we are to find the factor through which the volume changed:
P₁V₁ = P₂V₂
V₂ =
Now:
P₁ = P₁
P₂ = 4P₁
V₂ =
Therefore, the factor of the volume change is
Answer:
It's because they are easily carried by the wind.
<u><em>Hope I helped :)</em></u>