Question

What is atomic size? How it varies in a group and in a period

Answer 1

Answer:

Sorry noob I didn't get a chance to call you yesterday

Answer 2

Answer:

Atomic size is the distance between the center of nucleus and the outermost electron in the outer shell. Across a period from left to right there is decrease in atomic size with increase in nuclear charge of the element. Atomic size increases down the group because of addition of extra shell.