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STatiana [176]
3 years ago
12

In the periodic table, a set of properties repeats from

Chemistry
2 answers:
solong [7]3 years ago
5 0

Explanation:

The vertical rows in a periodic table are called rows. Whereas columns in a periodic table are called group.

So, elements in a periodic table when arranged in a period then they tend to repeat their properties because when the row repeats then elements with similar properties fall under same groups.  

Thus, we can conclude that in the periodic table, a set of properties repeats from row to row.

jok3333 [9.3K]3 years ago
3 0

in the periodic table, a set of properties repeats from row to row

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             that is  divide 15.2/ 3.8 = 4 half life

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therefore  3.8 days ago  it was  3.1 x2 =  6.2 grams

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                  15.2  days  ago  it was  24.8 x2=49.6 grams





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