1. which out of the following elements has the lowest electronegativity: lithium, beryllium, magnesium, sodium

2. which out of the following elements has the least metallic character: lithium, beryllium, magnesium, sodium

3. which out of the following elements is the largest atom: lithium, beryllium, magnesium, sodium

Answers

Barium (Ba) has the lowest electronegativity of the choices you have given. 

The electronegativity of Calcium (Ca) is 1
The electronegativity of Strontium (Sr) is 0.95
The electronegativity of Magnseium (Mg) is 1.31 (has the highest)
The electronegativity of Barium (Ba) is 0.89

Of the list above, you can see that Barium has the lower level of electronegativity (0.89). Therefore, the correct answer is D. 

Let me know if you need further info. 

            - Dotz 
Are you referring to this question?
Which of the following elements has the lowest electronegativity?a. lithium 
b. Carbon 
C. bromine 
d. fluorine

If you are, then the answer is lithium, letter A.

The top right corner of the periodic table has the highest electronegativity and it decreases as it goes left. Lithium is the farthest to the left out of these options.
A. lithium
there ya go
A) K is the element with the lowest electronegativity

I believe it is D I might be wrong

Explanation:

Fr

Explanation:

Ca (calcium) has 1.00

Sr (strontium) has 0.95

and Fr (francium) has 0.7

making it Fr (francium)

B

Explanation:

Electronegativity is a term used to describe the ability of an atom to attract to itself a bonding electron pair. It is one of the several properties that exhibit periodicity. This serves to mean that it varies within groups and across periods on the periodic table.

With the exception of the element bromine in the options list, all the other three elements belong to the same period of the periodic table. They belong to period two of the periodic table. This is because they have the same number of electron shells which is 2.

Hence, it is expected that the electronegativity trend is expected to persist to an extent in these elements. It must be said that electronegativity increases across a period. Basically as we move across the periodic table from left to right , it is surely expected that we encounter an increase in electronegativity from left to right.

While metallic elements are expected to have less electronegativity values, the highest electronegativity values are expected to be found in the halogens.

Li

Explanation:because if you looked at the periodic table you will find that all this elements are in the same row. And you must have known that when you go to the right the electronegativity increases so Li is the lowest one as it is located at the left of this row.

The element Sodium (Na) has a low electronegativity of the following elements.The element Beryllium (Be) has the least metallic character.The element Sodium (Na) has the largest atom.

Explanation:

Sodium (Na) which is a delicate, shimmering white, profoundly responsive soluble base metal loses an electron to a chlorine iota since it has seven electrons in its valence shell. It needs one more electron to turn into a steady molecule. It has the most reduced electronegativity of the given components. Beryllium (Be) is a light, silver-gray, relatively soft metal that is strong but brittle has the least metallic character of the given elements.Since from left to right in a period, Metallic character decreases while nonmetallic character increases from top to bottom.Sodium(Na) is the largest atom among the given elements since Atomic size decreases across a period from left to right and increases from top to bottom.
The element Sodium (Na) has a low electronegativity of the following elements.The element Beryllium (Be) has the least metallic character.The element Sodium (Na) has the largest atom.

Explanation:

Sodium (Na) which is a delicate, shimmering white, profoundly responsive soluble base metal loses an electron to a chlorine iota since it has seven electrons in its valence shell. It needs one more electron to turn into a steady molecule. It has the most reduced electronegativity of the given components. Beryllium (Be) is a light, silver-gray, relatively soft metal that is strong but brittle has the least metallic character of the given elements.Since from left to right in a period, Metallic character decreases while nonmetallic character increases from top to bottom.Sodium(Na) is the largest atom among the given elements since Atomic size decreases across a period from left to right and increases from top to bottom.


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