7.86 Write the empirical (or molecular) formulas of compoundsthat the elements in the third period (sodium to chlorine)should form with (a) molecular oxygen and (b) molecularchlorine. In each case indicate whether you would expectthe compound to be ionic or molecular in character.

Q: Given the following information about two elements X and Y of the same group. Element Atomic…

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Q: Which is the largest atom out of the following? a) Bi b) N c) P d) As

A: We will answer this question using study  periodic table and periodic trends.

Q: The periodic table is organized such that elements in the same group have the same ionic charge.…

A: All elements have a tendency to attain filled valence shell. Hence, elements react to attain a…

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: 7.92 For each pair of elements listed, give three properties that show their chemical similarity:…

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Q: 1. To what group in the periodic table do the elements listed belong ? 2. Why these elements are…

A: The elements listed are called inert gases and belong to the group 18 of the periodic table. They do…

Q: Smileyum, with the symbol Sy, and frownium, with the symbol En, are fictitious nonmetal elements.…

A: Since there is no information given about the valence of both elements. Hence option 3 and 4 is…

Q: The charges of a set of isoelectronic ions vary from 3+ to 3-. Place the ions in order of…

A: Isoelectronic ions are those ions in which the number of electrons are same. The elements lose…

Q: The first three ionization energies (IE,through IE,) of a Period 2 element have the following…

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Q: 7.72 Give the physical states (gas, liquid, or solid) of themain group elements in the fourth period…

A: Intermolecular forces refer to the type of interactions which are present in between atoms or…

Q: 7.6.3 Which of the following is the most realistic representation of an atom from Group 6A becoming…

A: Group 6A elements are called Chalcogens. Their general electronic configuration is ns2np4. Hence,…

Q: Write the electron configuration for a magnesium cation with a charge of +2.

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Q: An atomic cation with a charge of +1 has the following electron configuration: [Ne] 3s

A: Electronic configuration refers to the systematic arrangement of electrons in the various shells and…

Q: Strontium, which is used to produce red fireworks, has an electron configuration of [Kr]5 s 2.…

A: The group, period and block of strontium element has to be given.

Q: Why are anions generally larger than cations with similar numbers of electrons?

A: The reason why anions generally larger than cations with similar numbers of electrons has to be…

Q: 7.5 B List all the common ions that are isoelectronic with Ne.

A: Isoelectronic species are those species which have same number of electrons. For example - Neon (Ne)…

Q: Write the electron configuration for an aluminum cation with a charge of +2.

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Q: 2 Identify and explain the error with the order of the elements below.

A: The electronic configuration of given elements will be as following Li= 1s2 2s1 Be= 1s2 2s2 Na= 1s2…

Q: 2. Arrange the following elements in terms of increasing first ionization energy (arrange them…

A: Ionisation energy is the energy required to remove most loosely bound electron from the isolated…

Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. O

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Q: An atomic anion with a charge of -2 has the following electron configuration: "ק3".3"ק2".2':1 How…

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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: Describe the relationship between:a. the radius of a cation and the radius of the atom from which it…

A: a) When the electrons are lost from an atom, it leads to the formation of a cation. This results in…

Q: Arrange the following elements according to the increase in their atomic sizes; (0, S, Se) S> Se >0…

A: Atomic radius: The atomic radius of an element decreases as we move from left to right in a period…

Q: 1- Write the empirical formula for at least four ionic compounds that could be formed from the…

A: Dear student as per guidelines allowed to answer one question  so I answering first question  MnO4-=…

Q: Write the name of element and classify it as a metal, nonmetal, or metalloid. I

A: Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals…

Q: 6. How many protons, electrons, and neutrons does "K* have

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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…

A: Modern periodic table was prepared by Henry Mosley which is based on modern periodic law according…

Q: Hypothetical elements X and Y form a molecule XY2, inwhich both Y atoms are bonded to atom X (and…

A: A bond in a molecule is a type of attractive force between the atoms of the molecules. The type of…

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

A: Elements based on their periodic locations: 1.) Period 3, Group 2 (2A) : The third period contains…

Q: The first five ionization energies (IE, through IE,) of a Period 4 element have the following 1 ll…

A: cobalt

Q: The ionic radii of the ions S2–, Cl–, and K+ are 184, 181, 138 pm respectively. Explain why these…

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Q: Consider the stable elements through lead (Z = 82). Inhow many instances are the atomic weights of…

A: Up to Z=82, there are three instances where atomic weights of the elements is reverse out of order…

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

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Q: The first five ionization energies (IE, through IE,) of a Period 3 element have the following…

A: There are following elements present in third period of the periodic table -  Sodium , Na -11…

Q: ving: Why are the elements' atomic masses not in strict increasing order in the periodic table even…

A: As per the policy, we are only allowed to answer only 1st question. To get the answer of other…

Q: Which one of the following elements is most likely to have successive ionization energies in kJmol"…

A: Given   Successive ionization energy  (kJ/mole) 1st 786 2nd 1580 3rd 3230 4th 4360…

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

A: Given,  period 6, group 1 (1A)  period 4, group 12 (2B) period 2, group 15 (5A)

Q: 8 - Which of the following is incorrect?   A) The electron configuration of the element Sr ends…

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Q: The first four ionization energies (IE, through IE4) of a Period 2 element have the following…

A: The ionization energy of elements along a period increases from left to right because of stability…

Q: The symbol and atomic number of the lightest metalloid in Group 4A are:

A: Silicon (Si) is the lightest metalloid of Group lVA and its atomic number is 14.

Q: The first five ionization energies (IE, through IE5) of a Period 2 element have the following…

A: The difference in ionization energy between 3rd and 4th is very high . That means higher energy…

Q: From the following list of elements—Ar, H, Ga, Al, Ca, Br, Ge, K,O—pick the one that best fits each…

A: The elements are classified on the basis of their atomic numbers in the periodic table. It was first…

Q: Give an example of an atom whose size is smaller than fluorine.

A: Atomic size of an atom is defined as the distance between valence shell of the atom and the nucleus…

Q: Rank the following ions in increasing order of size:  Na+, Mg2+, S2-, Cl-

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: - Rank the size of the following atoms and ions – C, C*, F, Br", Rb*

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Q: The first five ionization energies (IE, through IE5) of a Period 4 element have the following…

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.