: Give the name of each of the following elements:<\/h3>\n\n\n\n
a. Noble gas in Period 2<\/strong> \u2192 Neon (Ne)<\/strong> Step 1: Calculate the number of protons.<\/strong> Step 2: Use the periodic table.<\/strong> Answer:<\/strong> Step 1: Increase protons to 46 + 2 = 48<\/strong> Step 2: Assume same number of neutrons (61)<\/strong> Answer:<\/strong> The periodic table is arranged in periods (horizontal rows) and groups (vertical columns) based on atomic structure. Elements are classified into families such as noble gases, halogens, alkali metals, and alkaline-earth metals.<\/p>\n\n\n\n Neon (Ne)<\/strong> is the noble gas found in Period 2. Noble gases are chemically inert due to their full outer electron shells. Fluorine (F)<\/strong> is the halogen in the same period. Halogens are highly reactive nonmetals, especially with alkali metals. Sodium (Na)<\/strong> is the alkali metal in Period 3. Alkali metals are very reactive and have one electron in their outer shell. Bromine (Br)<\/strong>, a halogen in Period 4, is a reactive nonmetal known for its use in disinfectants. Calcium (Ca)<\/strong> is the alkaline-earth metal in Period 4, essential for biological functions like muscle contraction.<\/p>\n\n\n\n To determine an element\u2019s nuclear symbol, we use the format:<\/p>\n\n\n\n \u207dmass number\u207e\u208datomic number\u208eElement symbol<\/strong><\/p>\n\n\n\n For example, if an atom has a mass number of 107 and 61 neutrons, subtracting gives 46 protons. Atomic number 46 corresponds to palladium (Pd), so the symbol is \u2071\u2070\u2077\u2084\u2086Pd<\/strong>.<\/p>\n\n\n\n If a new atom has two more protons and electrons, its atomic number is 48. The element with atomic number 48 is cadmium (Cd). Assuming the number of neutrons remains the same, the mass number becomes 48 + 61 = 109, yielding the nuclear symbol \u00b9\u2070\u2079\u2084\u2088Cd<\/strong>.<\/p>\n\n\n\n This exercise illustrates how atomic structure determines an element’s identity and how nuclear symbols represent key atomic data.<\/p>\n\n\n\n Give the name of each of the following elements: a. Noble gas in Period 2 b. Halogen in Period 2 c. Alkali metal in Period 3 d. Halogen in Period 4 e. Alkaline-earth metal in Period 4 Q7. A neutral atom has a mass number of 107 and has 61 neutrons. Write its complete nuclear […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-232682","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/232682","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=232682"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/232682\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=232682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=232682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=232682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
b. Halogen in Period 2<\/strong> \u2192 Fluorine (F)<\/strong>
c. Alkali metal in Period 3<\/strong> \u2192 Sodium (Na)<\/strong>
d. Halogen in Period 4<\/strong> \u2192 Bromine (Br)<\/strong>
e. Alkaline-earth metal in Period 4<\/strong> \u2192 Calcium (Ca)<\/strong><\/p>\n\n\n\n
\n\n\n\nQ7: A neutral atom has a mass number of 107 and has 61 neutrons. Write its complete nuclear symbol.<\/h3>\n\n\n\n
Mass number = Protons + Neutrons
So, Protons = 107 \u2212 61 = 46<\/strong><\/p>\n\n\n\n
An element with atomic number 46 is Palladium (Pd)<\/strong>.<\/p>\n\n\n\n
\u2071\u2070\u2077\u2084\u2086Pd<\/strong><\/p>\n\n\n\n
\n\n\n\nQ8: An atom has two more protons and two more electrons than the atom in question 7. What is its complete nuclear symbol?<\/h3>\n\n\n\n
Atomic number 48 corresponds to Cadmium (Cd)<\/strong><\/p>\n\n\n\n
So, mass number = 48 + 61 = 109<\/strong><\/p>\n\n\n\n
\u00b9\u2070\u2079\u2084\u2088Cd<\/strong><\/p>\n\n\n\n
\n\n\n\nTextbook-style Explanation (300 words):<\/h3>\n\n\n\n
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