Chemistry: Identify the elements in the second, third, fourth, and fifth periods that have the same number of highest-energy-level electrons as barium.

Identify the elements in the second, third, fourth,

Ответ:

gemmaestelle

27.05.2020

Chemistry

Second- Beryllium (Be)
Third- Magnesium (Mg)
Fourth- Calcium (Ca)
Fifth- Strontium (Sr)

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Ответ:

thexgar

29.05.2020

Chemistry

The easiest way to find which is most similar is to look on a periodic table because it starts with the following categories, metals, semi metals, and non metals.

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Identify the elements in the second, third, fourth, and fifth periods that have the same number of highest-energy-level electrons as barium.

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