Question

write true or false, helium atom having the smallest size.​

Answer 1

Answer:

true

Explanation:

you will be a good idea to get the time to time

Answer 2

Answer:

True

Explanation:

Helium has two protons and two electrons in the same shell as hydrogen . Hydrogen has that 1 electron in k shell and helium has 2 electrons in k shell . So the attractive force between the nucleus and electrons in helium will be more thus pulling the valence shell (k shell) towards the nucleus more effectively . This is the basis of why we say “ Atomic size/radius reduces from left to right in a period and increases down a group .” In a group for every table we move down , a shell gets added . Therefore there’s more room and attraction becomes less and the space becomes more . For a period , an electron gets added to each element from left to right and in a same shell . More attraction , less the space !

Therefore helium has the smallest atomic size .