Chemistry by https://padlet.com/timlim0304/2gq2mkjxx9yitsg6 Atomic Structure en-us 2022-03-13 13:55:12 UTC 2025-12-13 01:33:52 UTC hello@padlet.com Relative charges timlim0304 https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126964649 protons - +1
neutrons - 0
electrons - -1]]> 2022-04-03 07:21:32 UTC https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126964649 Relative masses timlim0304 https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126964901 protons - 1
neutrons  - 1
electrons - 1/1840]]> 2022-04-03 07:22:15 UTC https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126964901 total number of protons and neutrons timlim0304 https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126965461 2022-04-03 07:23:43 UTC https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126965461 same element with same no protons different nucleon no which means different neutron no timlim0304 https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126966322 2022-04-03 07:25:46 UTC https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126966322 thru electron shells timlim0304 https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126971346
the first electron shell can only hold 2 electrons , second shell can only hold 8 electrons and third shell 8 and fourth shell is 2
maximum no of shells are 4 

]]> 2022-04-03 07:36:43 UTC https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126971346 Period and Group timlim0304 https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126971886 the no of electrons shells = period 

no of valence electrons = group 

e.g. 2.8.8.2 (period 4, group 2)

Same group = same chemical properties]]> 2022-04-03 07:37:58 UTC https://padlet.com/timlim0304/2gq2mkjxx9yitsg6/wish/2126971886