Which element has the electronic configuration 1s 22s 22p 63s 23p 3? view available hint(s)
1 answer:
The Si (silicon) element has electronic configuration
The placement of electrons and around the nucleus of a specific atom or molecule would be known as its electronic configuration. Protons, neutrons, as well as electrons, are the minuscule components that make up an atom. There is the same quantity of protons and electrons in a neutral atom.
The given electronic configuration is
By counting the total number of electrons, it will be 14. It is known that Si(silicon).
Therefore, the element will be Si.
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Answer:
The wavelength the student should use is 700 nm.
Explanation:
Attached below you can find the diagram I found for this question elsewhere.
Because the idea is to minimize the interference of the Co⁺²(aq) species, we should <u>choose a wavelength in which its absorbance is minimum</u>.
At 400 nm Co⁺²(aq) shows no absorbance, however neither does Cu⁺²(aq). While at 700 nm Co⁺²(aq) shows no absorbance and Cu⁺²(aq) does.
