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Questions
An element has its electron configuration as 2, 8, 2. Now answer the following question.
Which of the following elements would this element resemble?
(Atomic numbers are given in the brackets)
N(7), Be(4), Ar(18), Cl(17)
The electronic configuration of an element is 2,8,2. Then write the answer to the question given below.
The chemical properties of this element will be similar to which of the following elements?
(Atomic numbers are given in the brackets)
N(7), Be(4), Ar(18), Cl(17)
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Solution
- The element would resemble beryllium (Be).
- The given element has an electron configuration of 2, 8, 2, indicating that it contains two electrons in its outermost shell. It resembles beryllium (Be), which likewise possesses two valence electrons. Elements with the same number of valence electrons have similar chemical characteristics. Thus, the provided element resembles beryllium.
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