# data[].attributes.body
Have Central Nucleus
Dalton-Atoms
Thompson-Electrons
Bohr-Electron shell
Chadwell-Nuetrons

# data[].attributes.body
Atom is electrically nuetral
No.of neutron =mass no.-proton no.
Sub atomic particles proton nuetron electron

# data[].attributes.headline
Isotopes:atoms of the same element with the same number of protons but different no. of neutrons

# data[].attributes.subject
Isotopes:atoms of the same element with the same number of protons but different no. of neutrons

# data[].attributes.body
1)atoms of the same element
2)with the same no. of protons
3)different no. of neutrons

# data[].attributes.body
1)1st shell must have maximum 2 electrons
2)2nd,3rd shell must have maximum 8 electrons
3)Column groups(Roman numerals I, II, III)no. of outermost electron valence
4) same row same shell   rows:periods(Arabic 1,2,3)-no of occupied electron shells

# data[].attributes.headline
Electron occupy a particular orbit electron shell

# data[].attributes.subject
Electron occupy a particular orbit electron shell

# data[].attributes.body
X-electron of (element)

# data[].attributes.body
Size of an atom in an element is the same

# data[].attributes.body
The Chemical property depends on number of valence electron

# data[].attributes.body
When a atom have no neutral charge it is a ion
Ion to get stable electronic configuration like noble gas
Full electron shell