Question

Основания соответствуют химическим элеементам, имеющим следующие порядковые номера в ПСХЭ: 1. 20,16,12 2. 12, 20, 19 3. 13, 14,15 4. 6, 11, 12

Answer 1

2.12,20,19
Mg,Ca,K
Образуют основания

Answer 2

Основания соответствуют химическим элементам, имеющим следующие порядковые номера в Периодической системе химических элементов (ПСХЭ):

1. 20, 16, 122. 12, 20, 193. 13, 14, 154. 6, 11, 12 Please note that the search results provided snippets that mention the corresponding numbers, but they may not directly relate to the question. However, based on the information provided, the elements corresponding to the given numbers in the Periodic Table are as follows:

1. 20, 16, 12: The elements with atomic numbers 20, 16, and 12 in the Periodic Table are calcium (Ca), sulfur (S), and magnesium (Mg), respectively. 2. 12, 20, 19: The elements with atomic numbers 12, 20, and 19 in the Periodic Table are magnesium (Mg), calcium (Ca), and potassium (K), respectively. 3. 13, 14, 15: The elements with atomic numbers 13, 14, and 15 in the Periodic Table are aluminum (Al), silicon (Si), and phosphorus (P), respectively. 4. 6, 11, 12: The elements with atomic numbers 6, 11, and 12 in the Periodic Table are carbon (C), sodium (Na), and magnesium (Mg), respectively.

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