{"id":90593,"date":"2025-06-01T10:31:39","date_gmt":"2025-06-01T10:31:39","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90593"},"modified":"2025-06-01T10:31:39","modified_gmt":"2025-06-01T10:31:39","slug":"which-one-of-the-following-properties-decreases-across-the-periodic-ta","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-properties-decreases-across-the-periodic-ta\/","title":{"rendered":"Which one of the following properties decreases across the periodic ta"},"content":{"rendered":"

Which one of the following properties decreases across the periodic table from left to right and increases from top to bottom?<\/p>\n

[amp_mcq option1=”Ionization energy” option2=”Electron affinity” option3=”Electronegativity” option4=”Atomic radius” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CAPF – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nAtomic radius decreases across the periodic table from left to right and increases from top to bottom.
\n<\/section>\n
\nAcross a period (left to right), the atomic radius decreases because the nuclear charge increases while electrons are added to the same energy shell, pulling the electron cloud closer to the nucleus. Down a group (top to bottom), the atomic radius increases because new electron shells are added, increasing the distance between the nucleus and the valence electrons, despite the increased nuclear charge.
\n<\/section>\n
\nIonization energy, electron affinity (generally), and electronegativity all tend to increase across a period from left to right and decrease down a group from top to bottom, showing the opposite trend to atomic radius. This is because these properties are related to the attraction between the nucleus and electrons; a smaller radius generally means a stronger attraction.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following properties decreases across the periodic table from left to right and increases from top to bottom? [amp_mcq option1=”Ionization energy” option2=”Electron affinity” option3=”Electronegativity” option4=”Atomic radius” correct=”option4″] This question was previously asked in UPSC CAPF – 2021 Download PDFAttempt Online Atomic radius decreases across the periodic table from left to right and … <\/p>\n

Detailed SolutionWhich one of the following properties decreases across the periodic ta<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1085],"tags":[1110,1162,1096],"class_list":["post-90593","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1110","tag-atomic-structure","tag-chemistry","no-featured-image-padding"],"yoast_head":"\nWhich one of the following properties decreases across the periodic ta<\/title>\n<meta name=\"description\" content=\"Atomic radius decreases across the periodic table from left to right and increases from top to bottom. Across a period (left to right), the atomic radius decreases because the nuclear charge increases while electrons are added to the same energy shell, pulling the electron cloud closer to the nucleus. Down a group (top to bottom), the atomic radius increases because new electron shells are added, increasing the distance between the nucleus and the valence electrons, despite the increased nuclear charge.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-properties-decreases-across-the-periodic-ta\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following properties decreases across the periodic ta\" \/>\n<meta property=\"og:description\" content=\"Atomic radius decreases across the periodic table from left to right and increases from top to bottom. Across a period (left to right), the atomic radius decreases because the nuclear charge increases while electrons are added to the same energy shell, pulling the electron cloud closer to the nucleus. Down a group (top to bottom), the atomic radius increases because new electron shells are added, increasing the distance between the nucleus and the valence electrons, despite the increased nuclear charge.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-properties-decreases-across-the-periodic-ta\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:31:39+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which one of the following properties decreases across the periodic ta","description":"Atomic radius decreases across the periodic table from left to right and increases from top to bottom. 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