Question

Which of the alkaline earth metals has the smallest electronegativity

Answer 1

Answer:-Barium(Ba)

Step-by-step explanation:-

Electro negativity means the ability to attract ans take electron.(Highest in Fluorine)

• The halogens has highest EN than other families as they need only 1 electron to complete octet.
• Alkaline earth metals such as Be,Mg,Ca,Sc,Ba,Ra.
• They have 2 electrons in their valence shell but .

If we see their Electronic Configuration

`\\ \rm\hookrightarrow Be=1s^22s^2`

`\\ \rm\hookrightarrow Mg=1s^22s^22p^63s^2`

And so on

• The s subshell is completely filled (Duplet)
• So they are more stable .
• So they less attract electron as they has less EN