1 Elements in Group 8A are known as the ________. Group of answer choices noble gases halogens chalcogens alkali metals alkaline earth metals 2 Which species has 18 electrons? Group of answer choices 45Sc3+ 39K 35Cl 32S2- 27Al3+

Q: periodic

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A: Identify the elements based on their location in periodic table:

Q: 6. Calculate the atomic mass of the element described below (both atoms of the same element). Then…

A: Isotopes are defined as the atoms of same element having same number of protons but different number…

Q: Kindly check if this is correct, thank you

A: 7. Nucleons means neutrons + protons.  C-14 has nucleons = 14  C has 6 protons as its atomic number…

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Q: a. Find the molar heat of combustion (in kJ/mol) of isooctane vapor.

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

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Q: From the given atoms below, select an atom with 61 neutrons, 47 protons, and 46 electrons? OA. O A.…

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Q: TQhB66q?1oB O CHEMICAL REACTIONS Percent yield of chemical reactions OOOC 15 quid octane…

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Q: Using the periodic table, identify the name and symbol of the three neutral atoms given their atomic…

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Q: This question serves as a summary. Match the element symbol to the periodic table location.…

A: The objective of this question is to match the given element symbols to their respective categories…

Q: Classify each element as a metal, a semimetal, or a nonmetal. In Metal Ge Semimetal (metalloid) Xe…

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Q: QUESTION 4 Claudia has an atom whose electron configuration is 1s2 2s22p 3s2 3p¹. Which of the…

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Q: Fill in the blanks 1. An orbital is the region in an atom where it's more likely (probably) to find…

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Q: What is the name of the elements with the followihg atomic numbers: Atomic Number Element 41 60 91

A: Write name of the given atomic number---

Q: What Group would all of these elements be part of? Hint: look at the Valence Electrons ( The…

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Q: Which statement is true of the atom with an electron configuration of 1s2 2s2 2p6 3s1? This is the…

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Q: Determine the number of neutrons, protons, and electrons for a bromide ion that has a mass number of…

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Q: lon Practice Set 1. What is an ions an atom that G positic Or 2. Use a periodic table to complete…

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Q: Current modern atomic theory is based on which of the following? Quantum Model Rutherford…

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Q: All atoms of an element are alike. 1- True  2-False

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Q: 1. The vertical columns in the periodic table are called _ halogens periods groups valence 2. Which…

A: Answer of problem 1,2,3 are as follows:

Q: 1. The electron configuration for a neutral element is 1s 2s?2p'. If the electron configuration for…

A: The distribution of electrons in an element's atomic orbitals is defined by its electron…

Q: d each description in the first column of the table below. If any chemical element with atomic…

A: The periodic table is a tabular arrangement of chemical elements in order of increasing atomic…

Q: Determine the number of protons, neutrons, and electrons in the following: O p= 18 n = 22 e = 40 O…

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Q: 8. (Calorimetry - Determination of specific heat) A 5.1-gram piece of gold jewelry is removed from…

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Q: 13. (Entropy) For each of the following processes, tell whether the entropy of the universe…

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Q: 5A 6A 7A 1A H. Li 2A ЗА 4A 8A He Ne Ar Kr Be Mg Са Na P. Al Ga Si CI Br According to this…

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Q: What is wrong with this model ?

A: Atom consist of nucleus that consist of protons and neutrons. Electrons revolve around nucleus.…

Q: Find the period 3 (AN #11-18) and period 4 elements (# 19 – 36). Do period 3/period 4 have the same…

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A: Atomic Radius: It is the distance between Nucleus of atom and outer most orbit of atom. It indicates…

Q: tudent is studying the ways different elements are similar to one another. Diagrams of atoms from…

A: The  element  belong to same group have same number of electron  in outermost shell .

Q: Mass #: sum of protons (+) and neutrons Net Charge: difference between # of protons (+) and # of…

A: Given table is represented as follows:

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

A: We have to identify the symbol of the elements based on the given informations.   Introduction: To…

Q: Write isotopic notation symbols for each of the following   z=8.  A=18

A: Isotope notation:

Q: 57 58 La Ce Lanthanum 138.90047 Cerlum 140.11 Ptable 90 89 Ac Actinium (227) .com Th Therum 21203M…

A: Atomic mass of Pd is 106.42u and atomic mass of Cd is 112.411u  Ag has atomic mass of 107.86 u…

Q: 12. (Phase change) Calculate the total amount of heat absorbed (in kJ) when 3.00 mol of ice at…

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Q: Why does Flourine has a larger atomic radius than Oxygen when it comes after Oxygen in the period?

A: Given: Fluorine has a greater atomic radius than oxygen even though fluorine comes after oxygen.

Q: O ATOMS, IONS AND MOLECULES Finding atomic mass from isotope mass and natural abundance A robot…

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Q: ue False Elements of the same group have simīlar physical and chemical properties. There are more…

A: 1.  True. - elements of same groups have similar physical and chemical properties. 2.  False. -…

Q: Does any element with ZS 92 match the description? If you checked yes, give the symbol of an element…

A: Periodic table is the arrangement of elements in a systematic way based on their physical and…

Q: In the following table, be sure to enter a number in each box, even if that number is zero (0). T…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…