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An atom contains a dense nucleus surrounded by ......of electrons
negative
The nucleus containts the nucleons (.......and.......)
proton and neutron
Protons are.......charged, electrons have ......charge and .......unchanged
positive,negative , and neutron
what is maximum number of electron in principal quantum shell =2
8
what is neutrons
the tiny central core of the atom
what is number of subshell in principal quantum shell 1
1
electronic configuration 14
1s2 2s2 2p6 3s2 3p2
electronic configuration of 19
1s2 2s2 2p6 3s2 3p6 4s1
electronic configuration of 35
(Ar) 4s2 3d10 4s2 4p6
electronic configuration of Na+
1s2 2s2 2p6
in which group this atom is belong? 1s2 2s2 2p6 3s2
IIA
In which group this electron is belong? 1s2 2s2 sp3
VA
