{"id":414,"date":"2024-12-08T00:18:00","date_gmt":"2024-12-07T23:18:00","guid":{"rendered":"https:\/\/biophy-sympa.com\/?page_id=414"},"modified":"2025-08-10T11:27:53","modified_gmt":"2025-08-10T09:27:53","slug":"bases-de-la-radioactivite-1-3-exercice-n1","status":"publish","type":"page","link":"https:\/\/biophy-sympa.com\/index.php\/bases-de-la-radioactivite-1-3-exercice-n1\/","title":{"rendered":"Bases de la Radioactivit\u00e9 1\/3 : Exercice n\u00b01"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;Libre Baskerville||||||||&#8221; text_font_size=&#8221;22px&#8221; custom_margin=&#8221;||19px|||&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Question n\u00b01 :<\/p>\n<p>[\/et_pb_text][et_pb_code _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;0b742840-bbf8-4f62-bfe0-e2bf75807952&#8243; module_alignment=&#8221;center&#8221; min_height=&#8221;27.8px&#8221; custom_margin=&#8221;||26px|||&#8221; text_orientation_tablet=&#8221;&#8221; text_orientation_phone=&#8221;&#8221; text_orientation_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221;]Le potassium <math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mmultiscripts><mi>K<\/mi><mprescripts\/><mn>19<\/mn><mn>39<\/mn><\/mmultiscripts><\/math>, isotope stable du potassium, a une masse atomique \u00e9gale \u00e0 39,0982 u.[\/et_pb_code][et_pb_code _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;13px|||||&#8221; 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