Highest size will be of

How will you measure very small size like size of an atom of a substance

Among the elements, Ar, Si, Na and Cl . Select an elements with a. Highest IE b. Highest EA c. Smallest size d. Highest electrical conductivity

Among the elements, Ar, Si, Na and Cl . Select an elements with a. Highest IE b. Highest EA c. Smallest size d. Highest electrical conductivity

How many classes of town are there in India based on population size ? Give the size as well. Which of them has the highest percentage of people ?

Identify the best choice in the list: (i) Largest ionic size :Mg^(2+), Ca ^(2+), Ba ^(2+) (ii) Smallest size :I ^(+), I^(-), I (iii) Highest negative electron gain enthalpy: Br, Cl,F