Zinc
Noble Gas Notation: [Ar] 3d10 4s2 Electron Configuration: 1s2, 2s22p6, 3s23p6, 4s23d10 Electron Arrangement in Shell: 2, 8, 18, 2
The electron configuration of zinc is 1s22s22p63s23p64s23d10
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3.
Since gallium's atomic number is 31, we know that it has 31 protons and 31 electrons. Thus, its complete electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1. From this, we see that its highest number shell, which is its valence shell is 4. Thus the valence electron configuration of polonium is 4s2 4p1.
The condensed electron configuration of rubidium is [Kr] 5s1 in the 1st group of period V
Noble Gas Notation: [Ar] 3d10 4s2 Electron Configuration: 1s2, 2s22p6, 3s23p6, 4s23d10 Electron Arrangement in Shell: 2, 8, 18, 2
The electron configuration of zinc is 1s22s22p63s23p64s23d10
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1 is the electron configuration for Indium.
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3.
Short answer: [Ar] 3d10 4s2 4p3 OR 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5 or [Ar] 4s2 3d10 4p5
Since gallium's atomic number is 31, we know that it has 31 protons and 31 electrons. Thus, its complete electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1. From this, we see that its highest number shell, which is its valence shell is 4. Thus the valence electron configuration of polonium is 4s2 4p1.
The condensed electron configuration of rubidium is [Kr] 5s1 in the 1st group of period V
1s2 2s2 2p6 3s2 3p6 4s2 3d10
That is Arsenic.
Bromine
Arsenic's atomic number is 33. That means neutral arsenic has 33 protons and 33 electrons. Thus, its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3.