Name two elements that occur in the free metallic state in nature.

Q: An element reacts with oxygen to form an oxide which dissolves in dilutehydrochloric acid The oxide…

A: The oxide form of an element in HCl turns red litmus to blue. This gives clear picture that given…

Q: Using an argument based on the electron configurations, explain why iron is commonly found in nature…

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Q: Describe the general characteristics of metals.

A: Introduction: In the periodic table, all elements can be classified into three categories, 1.Metal:…

Q: Number of electrons, electron configuration,orbital diagram, and magnetic property of silicon.

A: The atomic number of Silicon is 14. So, the total number of electrons present in the Silicon is 14.…

Q: Some properties of element Y are listed. It reacts with hydrochloric acid to make hydrogen gas. It…

A: 1. Mg +2HCl  → MgCl2  + H2 2. Mg  + H2O → MgO + H2 Magnesium burns in steam to produce white…

Q: Explain the trend for size and ionization energy on the periodic table, include the reason for rows…

A: The periodic trend indicates the varying properties of elements with its position on the periodic…

Q: Elemental phosphorus is tetratomic. Why?

A: Phosphorous is a element with large atomic size.

Q: The ionization energy of chlorine is greater than the ionization energy of phosphorus because

A: Ionization energy: It is an energy that is required to remove an electron from a molecule or an…

Q: give examples of transition elements.

A: The transition elements contain either d subshells which are incomplete or that readily lose…

Q: When a metal leaf electroscope is charged by contact with a negatively charged rod: Oprotons move…

A: An atom consists of protons and neutrons present inside the nucleus and electrons revolve around…

Q: what are the groups of Elements that are the most chemically active?

A: Reactivity of species is predicted by their valence electrons or simply known as "valency". Lesser…

Q: Based on ionization energy, why is cesium called the most metallic metal

A: The ionization energy is the minimum energy which is absorbed by a gaseous atom to discharge one…

Q: What family of elements are the most active metals ?

A: What family of elements are the most active metals has to be given.

Q: Indicate the physical state for each of the following elements at 25 °C and normal pressure.…

A: (a) barium (Ba) : Physical state = Solid  Metal element.  (b) boron (B)  Physical state = Solid…

Q: first ionization energy.

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Q: ionization energy

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Q: Use the periodic table to write the condensed electron configuration for Co [atomic no. =27].

A: Condensed valence configuration: It contains two parts; core electrons (electrons in Noble gas) and…

Q: which is most rare noble gas?

A: The rare gas is a gas that is present in very small amounts in the air. The rare noble gases are…

Q: electron motion in metals. {

A: Metal are ductile, lustrous, malleable in nature. Metal have a tendency to lose electrons. Therefore…

Q: Use aluminum as an example to explain how density is a periodic property.

A: Density is given by,

Q: What is electron affinity? Do electrons flow toward a chemical with a higher or lower electron…

A: Electron affinity is defined as the change in energy (in kJ/mole) of a neutral atom (in the gaseous…

Q: Which atom has the highest first ionization energy?

A: From the given electronic configuration the highest first ionization energy can be shown below

Q: Using the periodic table to locate each element, write theelectron configuration of (a) Ru; (b) Cu;…

A: a) Ruthenium is in Period 5 and Group 8B (8) The outer most electronic configuration of Ru is [Kr]…

Q: What is your favorite color of fireworks? Which element is responsible for this color and which…

A: The colour red in the fireworks comes from the use of Strontium salts hence the element Strontium…

Q: 1. An object placed on the path of a cathode ray in a cathode ray tube produces a sharp shadow on…

A: (a) Electron behaves as a wave. The given mention statement is the correct explanation of question.

Q: Put elements of Magnesium, Strontium, and Chlorine in order from lowest ionization energy to…

A: Ionisation Energy : The Energy required to remove a one electron from Element in gaseous phase is…

Q: Consider the metals in the first transition series. Use periodic trends to predict a trend in…

A: On moving to the right across the series in the first transition series, the density increases to…

Q: Consider the metals in the first transition series. Use periodic trends to predict a trend in…

A: INTRODUCTION: Transition metal is defined as the element that can participate in the formation of…

Q: Why does Copper emitt a green color when burned based off of its electron configuration.

A: Atomic number of copper is 19. Hence the electronic configuration of copper is [Ar] 3d¹⁰4s¹.

Q: Write the full electron configuration of vanadium, V. electron configuration: Write the full…

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Q: Chemistry How could you explain the difference in early and late transition metals using nickel as…

A: Generally, early transition-metals have strong resistance to undergoing reductive elimination to…

Q: What are inner transition elements and main transition elements?

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Q: eR or S configuration for ti

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Q: Which elements are post-transition metals? A. Europium, Gadolinium, Terbium B. Uranium, Neptunium,…

A: Post-transition metals are also termed  as the poor metals which are a group of metals on the…

Q: Which of these elements has the highest first ionization energy?

A: The minimum amount of energy required to remove an outer most shell electron  of a neurtal…

Q: in

A: Zinc react with HCl to produce zinc chloride which is a precipitate hydrogen gas .The original…

Q: does hydrogen exist as an atomic element in the air?

A: Interpretation: Does hydrogen gas exist as an atomic element in the air is to be determined.

Q: Using the periodic table to locate each element, write theelectron configuration of (a) Os; (b) Co;…

A: Interpretation: Using the periodic table to locate each element, the electron configuration of given…

Q: What's the electron configuration of Magnesium and why this element is essential for our planet?

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Q: Which of the elements listed below has the highest first ionization energy?

A: Ionization energy is defined as the minimum amount of energy needed to remove the most loosely bound…

Q: What are the transition elements? Write two characteristics of the transition elements.

A: Transition elements are those that are having incompletely filled d-orbitals. These elements are…

Q: Explain how metallic characteristics of an element is determined

A: Metallic characteristics: Metal characteristics basically belong to the reactivity of a metal.…

Q: е. Which metal is losing electrons?

A: Answer is e) Zinc  Because we know that E° Should be positive for a Reaction and that can be done by…

Q: which element is a metal in period 5 of the periodic table

A: Periodic table:In a periodic table elements are arranged by atomic number, electron configuration,…

Q: Discuss the groups of chemical elements that are the most active. give examples or explanation.

A: The primary difference between metals is the ease with which they undergo chemical reactions. The…

Q: Explain why the periodic trends for metal and non-metal reactivity are opposites.

A: The periodic trends are the properties related to the elements which are placed in the periodic…

Q: What is the electron configuration for silver in

A: To write the ground electronic configuration of Ag2+ and Ag+ Electronic configuration of an atom is…