Question

Элемент, невозбужденный атом которого не содержит неспаренных элементов, - это 1 - Углерод 2 - Кремний 3 - Сера 4 - Магний

Answer 1

Этим элементом является МАГНИЙ

Answer 2

Answer:

Элемент, невозбужденный атом которого не содержит непаренных элементов, - это 4 - Магний.

This is supported by the information from Source which presents a question with multiple choices and indicates that the correct answer is 4.

Explanation:

An element with an unexcited atom that does not contain unpaired elements refers to an element with a filled electron shell. In the case of Magnesium, its electron configuration is 1s²2s²2p⁶3s², which means its outer shell is filled with 2 electrons in the s orbital and 6 electrons in the p orbital, resulting in no unpaired electrons.

Therefore, based on the information provided, the correct answer to the question is 4 - Магний.