Period 3 element

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• عناصر_الدورة_الثالثة
• Elementos_del_periodu_3
• Elements_del_període_3
• Periode-3-Element
• Elementos_del_periodo_3
• Elemento_de_periodo_3
• 3._periodoko_elementu
• Éléments_de_la_période_3
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• 第3周期元素
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• கிடைக்குழு_3
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• 3._periyot_elementleri
• 第3周期元素

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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 elements.

These are:

Mnemonic

A mnemonic (attributed to Richard Feynman)^{[citation needed]} for the elements of Period 3 (more precisely, starting from Neon, the last element of Period 2, and ending at Chlorine, the second-to-last element of Period 3) is:

"Nena, m'gal, sips chlorine"

(i.e., Ne-Na Mg-Al Si-P-S Chlorine).