Answer:
Selenium atoms have 34 electrons and the shell structure is 2.8. 18.6. The ground state electron configuration of ground state gaseous neutral selenium is [Ar].
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Answer:
The easiest way to test if water is acidic is to use litmus paper. Litmus paper is a paper that contains special dyes that will change color when exposed to acids or bases. In your case, if you dip blue litmus paper into water samples and it turns pink or red, then the water is acidic.
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This is the how writers should order a sequence of events:
Writers should use chronological order to narrate a sequence of events.
<h3>What does chronological order mean?</h3>
When you order a sequence of events in <u>chronological order</u>, it means that you order the events how they have occurred, from the first one (the oldest one) to the last one (the newest).
This would allow the reader to understand more easily the events.
Check more information about ordering a sequence of events in chronological order in the following link brainly.com/question/12600406