{"id":88242,"date":"2025-06-01T07:06:16","date_gmt":"2025-06-01T07:06:16","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88242"},"modified":"2025-06-01T07:06:16","modified_gmt":"2025-06-01T07:06:16","slug":"identify-the-element-having-zero-valency","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/identify-the-element-having-zero-valency\/","title":{"rendered":"Identify the element having zero valency"},"content":{"rendered":"

Identify the element having zero valency<\/p>\n

[amp_mcq option1=”Sulphur” option2=”Phosphorous” option3=”Lead” option4=”Radon” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2016<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nValency is the combining capacity of an element. Elements with zero valency are those that are chemically inert and do not readily form chemical bonds under normal conditions because their outermost electron shell is full. These elements are the noble gases. Among the given options, Radon (Rn) is a noble gas.
\n<\/section>\n
\n– Sulphur (S) typically has valencies of 2, 4, or 6.
\n– Phosphorous (P) typically has valencies of 3 or 5.
\n– Lead (Pb) typically has valencies of 2 or 4.
\n– Radon (Rn) is a noble gas (Group 18 of the periodic table) and its valency is considered zero.
\n<\/section>\n
\nNoble gases (Helium, Neon, Argon, Krypton, Xenon, and Radon) have a stable electron configuration with a full outermost electron shell (except Helium, which has 2 electrons in its single shell), making them very unreactive.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Identify the element having zero valency [amp_mcq option1=”Sulphur” option2=”Phosphorous” option3=”Lead” option4=”Radon” correct=”option4″] This question was previously asked in UPSC NDA-2 – 2016 Download PDFAttempt Online Valency is the combining capacity of an element. Elements with zero valency are those that are chemically inert and do not readily form chemical bonds under normal conditions because their … <\/p>\n

Detailed SolutionIdentify the element having zero valency<\/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":[1094],"tags":[1098,1096,1245],"class_list":["post-88242","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1098","tag-chemistry","tag-sulphur-nitrogen-halogen-inert-gases","no-featured-image-padding"],"yoast_head":"\nIdentify the element having zero valency<\/title>\n<meta name=\"description\" content=\"Valency is the combining capacity of an element. Elements with zero valency are those that are chemically inert and do not readily form chemical bonds under normal conditions because their outermost electron shell is full. These elements are the noble gases. Among the given options, Radon (Rn) is a noble gas. - Sulphur (S) typically has valencies of 2, 4, or 6. - Phosphorous (P) typically has valencies of 3 or 5. - Lead (Pb) typically has valencies of 2 or 4. - Radon (Rn) is a noble gas (Group 18 of the periodic table) and its valency is considered zero.\" \/>\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\/identify-the-element-having-zero-valency\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Identify the element having zero valency\" \/>\n<meta property=\"og:description\" content=\"Valency is the combining capacity of an element. Elements with zero valency are those that are chemically inert and do not readily form chemical bonds under normal conditions because their outermost electron shell is full. These elements are the noble gases. Among the given options, Radon (Rn) is a noble gas. - Sulphur (S) typically has valencies of 2, 4, or 6. - Phosphorous (P) typically has valencies of 3 or 5. - Lead (Pb) typically has valencies of 2 or 4. - Radon (Rn) is a noble gas (Group 18 of the periodic table) and its valency is considered zero.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/identify-the-element-having-zero-valency\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:06:16+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":"Identify the element having zero valency","description":"Valency is the combining capacity of an element. 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Elements with zero valency are those that are chemically inert and do not readily form chemical bonds under normal conditions because their outermost electron shell is full. These elements are the noble gases. Among the given options, Radon (Rn) is a noble gas. - Sulphur (S) typically has valencies of 2, 4, or 6. - Phosphorous (P) typically has valencies of 3 or 5. - Lead (Pb) typically has valencies of 2 or 4. - Radon (Rn) is a noble gas (Group 18 of the periodic table) and its valency is considered zero.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/identify-the-element-having-zero-valency\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:06:16+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/identify-the-element-having-zero-valency\/","url":"https:\/\/exam.pscnotes.com\/mcq\/identify-the-element-having-zero-valency\/","name":"Identify the element having zero valency","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:06:16+00:00","dateModified":"2025-06-01T07:06:16+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Valency is the combining capacity of an element. 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