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Stels [109]
2 years ago
9

Which of these groups of elements show the least electronegativity?

Chemistry
2 answers:
alexandr1967 [171]2 years ago
6 0

<u>Answer:</u> The correct answer is Option B.

<u>Explanation:</u>

Electronegativity is defined as the property of as element to attract the shared pair of electron towards itself. The value of electronegativity is high for non-metals because they can easily gain electrons as compared to the metals.

This value decreases as we move down the group and increases as we move across a period.

Halogens are the elements which belong to Group 17. They easily gain electrons in order to attain stability. Thus, these elements have high electronegativity values.

Alkali metals are the elements which belong to Group 1. They easily loose electrons in order to attain stability and thus have low electronegativity.

Transition elements are the elements which belong from Group 3 to Group 12. They easily loose electrons in order to attain stability and thus have low electronegativity.

Alkaline earth metals are the elements which belong to Group 2. They easily loose electrons in order to attain stability and thus have low electronegativity.

From the above information, the elements which belong o Group 1 have the lowest electronegativity values.

Hence, the correct answer is Option B.

Nady [450]2 years ago
5 0

the answer is c if you are using plato

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Answer:

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Explanation:

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3 years ago
Refer to the periodic table tool and write the electron configurations of the following elements in both long and short terms
ahrayia [7]

Answer:-

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Explanation:-

For writing the short form of the electronic configuration we look for the nearest noble gas with atomic number less than the element in question. We subtract the atomic number of that noble gas from the atomic number of the element in question.

The extra electrons we then assign normally starting with using the row after the noble gas ends. We write the name of that noble gas in [brackets] and then write the electronic configuration.

For carbon with Z = 6 the nearest noble gas is Helium. It has the atomic number 2. Subtracting 6 – 2 we get 4 electrons. Helium lies in 1st row. Starting with 2, we get 2s2 2p2.

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