How could electron configuration be used to predict relative atomic size?

Answer 1

the larger the highest energy level number, the larger the atomic radius

Answer 2

the n level indicates the period in which the element is in. the total number of valence electrons in the highest energy level indicates the group the element is in. Finally, the last full sublevel filled is the block the element is in.

Ex: 1s^2 2s^2 2p^6

In group 18 (2+6=8)

In period 2

In the p-block

Answer 3

1- any element found in group lA then it ends with ns1 found in period 1 then ends with 1s1 , period 2 ends with 2s1 put period no. and s1
2- any element in group llA ends with ns2
found in period 1 then ends with 1s2 , period 2 ends with 2s2 put period no. and s2
3- any element in lllA ends with np1 (N.B we add 2 to no. of valence electrons if they end with np1..5 np1 in group lllA)
in period 1 there is no element in p-Block , period 2 ends with 2p1 put period no. and p1
4- any element in lVA ends with np2
period 2 ends with 2p2 put period no. and p2
5- any element in VA ends with np3
period 2 ends with 2p3 put period no. and p3
6- any element in VlA ends with np4
period 2 ends with 2p4 put period no. and p4
7- any element in VllA ends with np5
period 2 ends with 2p5 put period no. and p5
8- any element in group lllB till 6th period ends with {n(period no.-1)d1}
element in 4th period and lie in group lllB ends with 3d1
element in 5th period and lie in group lllB ends with 4d1
element in 6th period and lie in group lllB ends with 5d1
element in 7th period and lie in group lllB ends with 6d1
Inner transition elements lies in group lllB lying in 6th period and 7th period lanthanides (58Ce...71Lu) 4f1....14 Actinides (Th90...Lr103) 5f1....14

9- any element in lVB....VllB ends with n (period no. -1)dn(1...5)
in period 4 in group lVB ends with 3d2
in period 5 in group lVB ends with 4d2
10- any element in VB ends with nd3
in period 4 in group VB ends with 3d3
in period 4 in group VllB ends with 3d5
11-any element in VlB ends with nd4
in period 4 in group VB ends with 3d4
12-any element in VllB ends with nd5
in period 4 in group VllB ends with 3d5
13- any element lie in group 8 ends with nd6...8 group 8 include 3 columns because these elements are similar horizontally and vertically
14-Group lB I don't know how can electronic configuration be written from it
15-any element lie in group llB ends with 3d10
in period 4 in group llB ends with 3d10
in period 5 in group llB ends with 4d10
16- group zero nobel gases all ends with np6 except He ends with ns2
1s
2(He)2s.....3p
10(Ne)3s....3p
18(Ar)4s.....3d.....4p
36(Kr)5s.....4d.....5p
54(Xe)6s....5d1...4f....5d2..10 ....6p
86(Rn)7s....6d1...5f.... 6d2..10 ....7p

Answer 4

An atoms electron configuration can be predicted by counting the number of the group that, that particular atom is in.

Answer 5

The number of electrons in the outer shell is the group number. Going to the left on the Periodic Table they gain more electrons and fill up by the time it reaches Group 8.

Answer 6

The e.c gives group and period of an element which shows position on periodic table