Question

select the add one out giving reason Lithium, sodium, potassium and calcium according to the periodic table​

Answer 1

Answer:

calcium

Explanation:

as lithium, sodium and potassium belongs to same group i.e group 1

while calcium lies in group 2..

Answer 2

Answer:

Odd one out is calcium because lithium have atomic number 3, sodium have atomic number 11, potassium have atomic number 15 and calcium 20. You are noticing that 3,11,15 are odd numbers and 20 is even so answer is calcium