Answer:
A synthetic element is one of 24 chemical elements that do not occur naturally on Earth: they have been created by human manipulation of fundamental particles in a nuclear reactor, a particle accelerator, or the explosion of an atomic bomb; thus, they are called "synthetic", "artificial", or "man-made".
Explanation: hope that helps
Valency- it means the combing capacity if an element.
<span> radical- it is an atom, molecule, or ion that has unpaired valence electrons or an open electron shell.
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Answer:
A) oxidizing agent is SO2
B) NaClO is the oxidizing agent
Explanation:
A) This is a redox reaction in which oxidation and reduction occur simultaneously.
Thus, in 2H2S(g) + SO2(g) -> 2H2O(l) + 3S(s);
H2S is reduced as follows;
H2S → S + 2H+ + 2e−
We can see that SO2 has been reduced while H2S gets oxidized since it has changed state from - 2 to 0 . Thus sulphur dioxide is the oxidizing agent.
B) SO2(g) + H2O(l) + NaClO(aq) -> NaCl(aq) + H2SO4(aq)
In this, SO2 undergoes oxidation and NaClO is the oxidizing agent
Answer:
The force exerted on it.
Explanation:
As the law of motion states, an object at rest will remain at rest an object in motion will remain in motion unless acted upon by another force.
Answer:
![4.86\times10^{-7}\ \text{m}](https://tex.z-dn.net/?f=4.86%5Ctimes10%5E%7B-7%7D%5C%20%5Ctext%7Bm%7D)
Explanation:
R = Rydberg constant = ![1.09677583\times 10^7\ \text{m}^{-1}](https://tex.z-dn.net/?f=1.09677583%5Ctimes%2010%5E7%5C%20%5Ctext%7Bm%7D%5E%7B-1%7D)
= Principal quantum number of an energy level = 2
= Principal quantum number of an energy level for the atomic electron transition = 4
Wavelength is given by the Rydberg formula
![\lambda^{-1}=R\left(\dfrac{1}{n_1^2}-\dfrac{1}{n_2^2}\right)\\\Rightarrow \lambda^{-1}=1.09677583\times 10^7\left(\dfrac{1}{2^2}-\dfrac{1}{4^2}\right)\\\Rightarrow \lambda=\left(1.09677583\times 10^7\left(\dfrac{1}{2^2}-\dfrac{1}{4^2}\right)\right)^{-1}\\\Rightarrow \lambda=4.86\times10^{-7}\ \text{m}](https://tex.z-dn.net/?f=%5Clambda%5E%7B-1%7D%3DR%5Cleft%28%5Cdfrac%7B1%7D%7Bn_1%5E2%7D-%5Cdfrac%7B1%7D%7Bn_2%5E2%7D%5Cright%29%5C%5C%5CRightarrow%20%5Clambda%5E%7B-1%7D%3D1.09677583%5Ctimes%2010%5E7%5Cleft%28%5Cdfrac%7B1%7D%7B2%5E2%7D-%5Cdfrac%7B1%7D%7B4%5E2%7D%5Cright%29%5C%5C%5CRightarrow%20%5Clambda%3D%5Cleft%281.09677583%5Ctimes%2010%5E7%5Cleft%28%5Cdfrac%7B1%7D%7B2%5E2%7D-%5Cdfrac%7B1%7D%7B4%5E2%7D%5Cright%29%5Cright%29%5E%7B-1%7D%5C%5C%5CRightarrow%20%5Clambda%3D4.86%5Ctimes10%5E%7B-7%7D%5C%20%5Ctext%7Bm%7D)
The wavelength of the light emitted is
.