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garik1379 [7]
3 years ago
12

Give an example of where you may see heat and light produced in everyday life which is not evidence of a chemical reaction. Expl

ain the source of the heat and light.
Chemistry
1 answer:
xxTIMURxx [149]3 years ago
5 0
Heat and light- The sun because it gives us daylight and it produces heat. These arent made by a chemical reaction when it comes to the sun.
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Complete the sentences to explain what a similar treatment would predict for the effective nuclear charge on boron valence elect
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Answer:

ZcH's electrons = 5-2 = +3.

ZcH for inner electrons = -5 - 0 = +5.


Explanation:

Boron 1s² 2s² 2p

As, 2s ⇒ 2.58.

2p ⇒ 2.42.

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