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Period six on the Periodic Table starts the row after Xenon. The electron shell 6s2 6p2 corresponds to the atomic number 82. This is lead.
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What don you notice about the number of valence electrons as you move from left to right across a row or the period in the periodic table na-mg-al-si-p-s-ci-ar?
The number of valence electrons increases by one as you move from left to right across a period in the periodic table. Sodium (Na) has 1 valence electron, magnesium (Mg) has 2 valence electrons, aluminum (Al) has 3 valence electrons, silicon (Si) has 4 valence electrons, phosphorus (P) has 5 valence electrons, sulfur (S) has 6 valence electrons, chlorine (Cl) has 7 valence electrons, and argon (Ar) has 8 valence electrons.
What is the element with a valence electron configuration of 2s2?
The element with a valence electron configuration of 2s2 is beryllium. Beryllium has 4 electrons, with 2 in the 2s subshell, which makes it have a valence electron configuration of 2s2.
How many valence electrons does a neutral atom of silicon have?
A neutral atom of silicon has 4 valence electrons. Silicon is in Group 14 of the periodic table, so it has 4 valence electrons in its outermost shell.
How many valence electrons does methane diazonium ion have?
The methane diazonium ion ((CH_4N_2^+)) has a total of 14 valence electrons. Methane contributes 4, and the diazonium ion contributes an additional 10 valence electrons (5 each from nitrogen and the nitrogen atom's positive charge).
How many valence electrons does an atom of potassium have?
4
