Question

Consider four atoms from the second period: lithium, beryllium, boron, carbon, and nitrogen. Which of these elements has the lowest electronegativity value?

lithium
beryllium
boron
carbon
nitrogen

Answer 1

lithium: 0.98
beryllium: 1.57
boron:2.04
carbon:2.55
nitrogen:3.04

lithium is the answer. it means that the atoms in the left side of the periodic table have the lowest electronegativity value
and the right side atoms have the highest
hope this helps

Answer 2

Answer: Option (a) is the correct answer.

Step-by-step explanation:

It is known that value of electronegativity increases when we move from left to right in a periodic table.

Since the given atoms lithium, beryllium, boron, carbon and nitrogen are all second period elements. And the value of their electronegativity are as follows.

Lithium : 0.98

Beryllium : 1.57

Boron : 2.04

Carbon : 2.55

Nitrogen : 3.04

Thus, we can conclude that lithium has the least electronegativity.