Find the period 3 (AN #11-18) and period 4 elements (# 19 – 36). Do period 3/period 4 have the same trend you saw in period 2?  Explain.

Q: In the dot diagram seen below which element could be represented by the letter X

A: In the given image, dots represent electrons.

Q: Mrs. Smith showed her class three elements and described their properties. Properties of Elements…

A: The data given is,

Q: In which set of elements would all memebers be expected to have very similar chemical properties? A)…

A: Periodic table represents the arrangement of the elements in increasing order of their atomic…

Q: The metals belonging to Group 1A form ions with a charge of ...

A: Group 1A elements -> Hydrogen, Lithium, Sodium, Potassium, Rubidium, Cesium & Francium. All…

Q: I wanna ask on how to specify the location of an element in the periodic table in terms of s area, p…

A: Location of Element is decided by Last electron in Electronic Configuration.

Q: An element X has 16 protons (p+1); 16 electrons (e-1) and 16 neutrons (n0). b) What is the period…

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Q: Which element is a row 4 noble gas? (a) Ne (b) Br (c) Zr (d) Kr

A: The rows or periods of a periodic table are made up of elements with the same number of electron…

Q: Imagine that you have been transported to an alternate universe where all the elements are different…

A: The atoms are arranged in a systematic manner on the basis of their atomic number in a periodic…

Q: Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: 66. Which element do you expect to be most like magnesium? Why?(a) potassium(b) silver(c) bromine(d)…

A: Magnesium = Its atomic number is 12, and present in Group 2 in the periodic table.

Q: Answer each question in 5 to 10 sentences only.  1. Why are the groups in the periodic table…

A: In Periodic table , all the elements are classified as A block and B block elements. A block…

Q: Identify these elements based on their locations in the periodic table. Give the symbol, not the…

A: Group 1A (or IA) of the periodic table are the alkali metals:  hydrogen (H), lithium (Li), sodium…

Q: The radius of a strontium atom is 215 pm. How many strontium atoms would have to be laid side by…

A: Diameter = 2 X Radius

Q: What are the Group 1A elements called? What are some shared characteristics within the group? Same…

A: Group 1A elements are called as the alkali metals. They include hydrogen (H), lithium (Li), sodium…

Q: 67. Which pair of elements do you expect to be most similar? Why?(a) Si and P(b) Cl and F(c) Na and…

A: Periodic table is an arrangement of elements in the order of increasing atomic number from left to…

Q: Na CI These 2 elements are in the same Period, what Period would it be? 1 18 2

A: Sodium (Na) electronic configurations [ Ne] 3s1 , Last electron is in  3S ,So principal  quantum…

Q: Part II: Observe the diagram below then answer the following questions. Write your answer on the…

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Q: Which of the following elements would be classified as a nonmetal? a.) silicon  b.) francium c.)…

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Q: X2+ contains 36 electron. What is the identity of X? (type the elemental symbol of X)

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Q: 1 Elements in Group 8A are known as the ________. Group of answer choices noble gases halogens…

A: 1. Group 8A (or VIII A) elements are : helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe),…

Q: What is the formula of chromium(VI) oxide?   What is the formula of carbon tetraiodide?

A: We have to predict the formula for the given names

Q: Part B Mendeleev placed thallium (TI) in the same group as lithium (Li), sodium (Na), potassium (K),…

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Q: a) What is the chemical symbol of this element? b) Write the electron configuration of 'X'. c) Write…

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Q: Choose all of the following that apply to oşmium, Os. a. Metalloid b. Alkali metal Oc. Transition…

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Q: III. Choose the element being described using the hypothetical elements in the periodic table below.…

A: 1A group stands for alkali metals and group 2A is alkaline earth metals . As we go down the group…

Q: 1. Which of the following element has an average atomic mass that is about ten times that of…

A: The average atomic mass of an element is the sum all the masses of its isotopes existing in nature ,…

Q: description Does any element with Z ≤ 92 match the description? If you checked yes, give the symbol…

A: We have to choose such elements which has atomic number equal or less than 92 of atomic number of…

Q: Finding and understanding important information on the periodic table is crucial to success in using…

A: Since you have posted questions with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Identify the following atoms using their symbols: a. contains 20 protons b. contains 12 electrons…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Period ale to eldat bibohaq to train Characteristics of element belong to every period. Give at…

A: Below attached file showing the details answer.  All the best.

Q: This group of elements is the most reactive of all the non-metals  A) rare earths B) halogens C)…

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Q: 33. What is the net electrical charge of chlorine (CI) if it has 16 electrons? a. 0. b. +1 с. -1 d.…

A: Atom will be positively charged if it loses electrons (the net electrical charge depends on the…

Q: 7.) Identify the following elements: a. period 5 alkali metal. 5 halogen. b. period 4 halogen. C.…

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Q: (a) the ion with a 3+ charge, 28 electrons, and a mass number of 71 (b) the ion with 36 electrons,…

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Q: Which of the statement is false? O potassium is an alkaline earth metal. O Lithium is an alkali…

A: Given : Statement  To find : False statement

Q: This homework is going to center around a completely made up element - Maplenium. This metal has a…

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Q: 200 What conclusions can you draw from this graph? 180 Atomic radius 160 140 120 100 Na Mg Al Si P…

A: Since you have asked have multiple questions, we will answer only first question for you. In order…

Q: The ion with 91 electrons, 148 neutrons, and a 4+ charge

A: Given: No. of electrons = 91 No. of neutrons = 148 Charge = +4

Q: Give all of the terms that apply to each element: [1] metal; [2] nonmetal; [3] metalloid; [4] alkali…

A: Elements: These are pure substances that consist of the same kind of atoms in all respects.…

Q: Which pair of elements do you expect to be the most similar? a. Molybdenum and Tin b. Nitrogen and…

A: Given,  a. Molybdenum and Tin  Electronic configuration of Mo = [Kr]4d55s1  Electronic configuration…

Q: A) Period 3 alkaline earth metal: B) Period 5 noble gas: C) Period 3 element with 4 valence…

A: Answer a, b & c ) :  A) Period 3 alkaline earth metal = ?  B) Period 5 Noble gas = ?  C) Period…

Q: Identify these elements based on their locations in the periodic table. Give the symbol, not the…

A: The standard periodic table consists of 7 horizontal rows called as periods and 18 vertical rows…

Q: If the density of a BCC metal is 8.95 g/cm3, determine its atomic weight if its radius is 0.30 nm

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Q: Identify these elements based on their locations in the periodic table. Give the symbol, not the…

A: Symbol of the given locations---

Q: 93. Which pair of elements have chemical properties that are the most similar? c. Cobalt and Copper…

A: The periodicity in the properties of the elements i.e, repetition of certain chemical properties of…

Q: 15. (a) b) c) d) Identify the element that is described by the following information. Refer to a…

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Q: D. Guide Questions 1. What are metalloids? Enumerate the elements considered to be metalloids. 2.…

A: What are metalloids

Q: Group I (the alkali metals) includes lithium (Li), sodium (Na), and potassium (K). These elements…

A: Introduction The number of valence electrons (electrons which are located on outer energy level) of…

Q: 1.)What is the atomic number for the element that is in group 1A and period 6? 2.) What is the…

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Q: fluorine (F) nitrogen (N) boron (B) iodine (I) Which two elements are in the same group and would…

A: The elements which have the same number of electrons in the outermost shell (or the same number of…