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A period 3 element is one of the chemical elements in the third row (or period) of the periodic table of the chemical elements.The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behavior of the elements as their atomic number increases: a new row is begun when chemical behavior begins to repeat, meaning that elements with similar behavior fall into ...
This page describes and explains the trends in atomic and physical properties of the Period 3 elements from sodium to argon. It covers ionisation energy, atomic radius, electronegativity, electrical conductivity, melting point and boiling point. These topics are covered in various places elsewhere on the site and this page simply brings ...
- [Ne] 3s 2 3p x1
- [Ne] 3s 1
- [Ne] 3s 2
- [Ne] 3s 2 3p x1 3p y1
the block in between Group 2 and Group 3 is where the transition metals are placed; there are only two elements in Period 1 (hydrogen and helium)
One of the rows (which are also known as periods) is highlighted in pink. This is period 3, and the eight elements within it are the period 3 elements. Fig. 1 - Period 3 in the periodic table. An element's period tells us how many electron shells it has. We can therefore correctly infer that period 3 elements all have three electron shells.
Jun 30, 2023 · Jim Clark. Truro School in Cornwall. This page describes and explains the trends in atomic and physical properties of the Period 3 elements from sodium to argon. It covers ionization energy, atomic radius, electronegativity, electrical conductivity, melting point and boiling point.
Jun 23, 2021 · The number of valence electrons depends on the octet rule. For example, elements in group 1 have 1 valence electron, elements in groups 3-12 have a variable number of valence electrons, and elements in group 17 have 7 valence electrons. The lanthanides and actinides, located below the main table, all fit within group 3. There are 18 element groups.
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Period 3 of the periodic table consists of eight elements: sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar). These elements are arranged in order of increasing atomic number, each possessing three electron shells. As one progresses from sodium to argon, there is a notable shift ...
