Order the theories from oldest to most recent. START ORDER Atoms consist of mostly empty space with a dense nucleus of positive charge. Atoms are tiny indivisible particles that make up all matter. Electrons occupy specific energy levels surrounding a positively charged nucleus. Electrons move about a positively charged nucleus in clouds that are defined by probabilities. Negatively charged electrons are embedded in a mass of positive charge. END ORDER 2

MODULE 6 A STUDENT ACTIVITY MAKING AN IMAGINARY PERIODIC CHART INTRODUCTION The following 26 elements were discovered in another far-away galaxy. They are symbolically represented by the letters of our alphabet and are listed in the order of their discovery. The intrepid explorers were able to determine the atomic masses of the elements and to group them partially into families of elements. PURPOSE • To design your own periodic chart. DATA OBTAINED BY THE EXPLORERS The Atomic Masses of the Elements in the Far-Away Galaxy A=45, B=47, C= 59, D=1, E=3, F= 13, G= 25, H= 15, I= 5, J= 7, K= 17, L= 49, M= 39, N= 21, O= 19, P= 9, Q= 11, R= 29, S= 50, T= 62, U= 63, V=53, W= 43, X= 33, Y=23, Z= 35 The Groups/Families of the Elements Active Gases: GTDL Liquids: S M E U H Metallic Solids: I K V I. I. III. IV. Transition Solids: JOR W Nonmetallic Solids: X P Noble Gases: Q ZCY B V. VI. Not yet classified into groups: F AN PROCEDURE 1. Using data obtained by the explorers, try to arrange the…

Researchers from Lund University in Sweden created it by slamming atoms of one element, calcium, into atoms Scientists confirm new element 115 after atoms collide By Ben Brumfield (1) As though it wasn't hard enough to memorize the names and atomic weights of 117 elements in the periodic number of 115 on the periodic table, the list of all elements known to humanity. table, scientists have now confirmed a new one. of another called americium. . Use paragraph 1 and 2 to describe how the element with 115 protons was createc. (3)The Swedes were the second groun of scientists to create the element. A group of Russian scientists put together the same type of atom in 2004. (4)But the new experiment corroborated their work and confirmed 115's existence. Still, this doesn't mean that you'll see element 115 on the next periodic table poster that gets published. The discovery still has to be approved by a committee composed of members of the International Union of Pure and Applied Chemistry and…

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D. Match items from column (A) with the suitable one from column (B) (A) (В) Alkaline earth metals Са 1 2 Noble gases Со 3 Halogens Ва Alkali Metals 4 Pb 5 One of d-block elements Na One of s-block elements +2 One of p-block elements Kr 7 Alkali metal located in period 3 K* 8 Noble gases located in period 4 Group 1A 10 Charge of ions of group IIA Group 2A Isoelectronic with Ar Group 7A 11 12 Similar chemical properties to F Group 8A Isoelectronic with Ne CI 13 Similar chemical properties to Mg 14

Does any element with ZS 92 match the description? If you checked yes, give the symbol of an element with Z S 92 description that matches. An element in Period 4 and Group 3A. O Yes O No A metalloid in Group 5A. O Yes O No A halogen with a higher atomic number than silicon. O Yes O No A main-group element in Period 2. O Yes O No O

Can you help with 17 and I showed you an answer from the answer book. I think the legend of the colors of the species might be incorrect.  Does this make sense. ?This is not a graded question as it is a practice question . I am 60 years old and helping my son prepare for the AP exam in a few months. We do questions at the back of the textbook by Zumdahl and Zumdahl

Chrome File Edit View History Bookmarks Profiles Tab Window Help Purple/Black Iridescent - KPM X wilmington postal code - Goo X Dealers - Ni A www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IvdWKW_BBZZIE O ATOMS, IONS AND MOLECULES Counting protons and electrons in atoms and atomic ions Fill in the missing information: symbol atom or ion? number of number of check all that apply protons electrons O neutral atom V cation anion 21 20 neutral atom O cation O anion 14 Te O neutral atom cation V anion

25. Classify each of the following elements as a (an) alkali metal, alkaline earth metal, transition metal, halogen, noble gas, or metalloid. Draw lines connecting elements in this table that have similar properties. a. sodium b. germanium c. calcium d. fluorine e. xenon f. copper g. chlorine h. silicon i. potassium j. magnesium