A thin metallic spherical shell contains a charge Q on it . A point charge q is placed at the centre of the shell and another charge q1 is placed outside it as shown in figure . All the three charges are +ve . The force on the charge at centre is
Answers
Answered by
1
Down a group
As the electron enters a new shell, the distance between the nucleus and the outermost electron increases. Thus, atomic size increases down a group.
2. Along a period
As there is no new shell appearing along a period, the distance between the nucleus and the outermost electron remains same but due to attraction between the nucleus and the electron, the distance decreases. Thus, the atomic size decreases along a period.
But, an exceptional case is there of noble gases as they have larger atomic size as compared to the elements in that period because of negligible Van der Waals forces of attraction.
Hope it will help
As the electron enters a new shell, the distance between the nucleus and the outermost electron increases. Thus, atomic size increases down a group.
2. Along a period
As there is no new shell appearing along a period, the distance between the nucleus and the outermost electron remains same but due to attraction between the nucleus and the electron, the distance decreases. Thus, the atomic size decreases along a period.
But, an exceptional case is there of noble gases as they have larger atomic size as compared to the elements in that period because of negligible Van der Waals forces of attraction.
Hope it will help
Similar questions