Question

-) Among the elements given below, the element with the
least electronegativity is :
(i) Lithium
(ii) Carbon
(iii) Boron
(iv) Fluorine
The metals of Group 2 from top to bottom are Be, Mg,
Ca, Sr and Ba.
(i) Which of these elements will form ions most
readily and why ?
(ii) State the common feature in the electronic
configuration of all these elements.​

Answer 1

Answer:

1. Flourine

2. (I) barium

(ii) they have +2 valancy