Question

which of the following elements will lose electron easily: (a) K (b) Na (c) Ca (d) Mg

Answer 1

I think k means pottasium

Answer 2

Answer:

Which of the elements will loose electrons easily…

Explanation:

Loosing electrons is only possible for any element if it has least number of electrons present in its outer most orbit.

Now lets look at the elements that you have given…

K (potassium) its electron valency is 1 so only 1 electron is present in the outer most orbit.

Ca (calcium) it has 2 electrons present in the outermost orbit.

Na (sodium) its electronic valency is 1.

Mg (magnesium) its valency is 2.

Now comparing the above mentioned valencies, Na has least likely to loose its electron as compared to potassium.

So the correct answer is K (potassium).