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The element with an electron configuration of
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Introduction to Chemistry
- What do we call reactions in which electrons are transferred between atoms or ions? What do we call a loss of electrons by an atom or ion? What is it called when an atom or ion gains electrons? Can we have a process in which electrons are lost by one species without there also being a process in which the electrons are gained by another species? Why? Give three examples of equations in which there is a transfer of electrons between a metallic element and a nonmetallic element. In your examples, identify which species loses electrons and which species gains electrons.arrow_forwardWrite balanced equations for the reaction of scandium metal to produce the scandium(III) salt with the following nonmetals: (a) sulfur (c) nitrogen (b) chlorine (d) oxygen (forming the oxide)arrow_forwardWhat evidence led to the conclusion that cathode rays had a negative charge?arrow_forward
- what is the physical state of element Pb? what is the physical appearance of element Pb? what is the color of element Pb?arrow_forwardTwo elements, alpha (with symbol α) and beta ( with symbol β) are known to undergo the following unbalanced chemical reaction. Balance the reaction in basic solution. You answer will be the sum of the coefficients. Example: if the equation balanced to α(s) + 2β2O3(aq) → 3βH3(aq) + 4α2+(aq) your answer would be 10. α(s) + β2O3(aq) → βH3(aq) + α2+(aq)arrow_forwardTo obtain pure lead, lead (II) sulfide is burned in an atmosphere of pure oxygen. The products of thereaction are lead and sulfur trioxide (SO3). Write a balanced chemical equation for this process.arrow_forward
- Two reactants are placed into a flask. A single displacement reaction occurs, with the general reaction scheme of: A + BC AC Single Displacement Reaction What is the possible formula of AC if A has 6 valence electrons and C has 1 valence electron? B.arrow_forwardA sample of cesium metal reacted completely with water, evolving 2.028 mmol of dry H 2 at 19 degrees C. What is the equation for the reaction? What was the mass of ceslum in the sample? (mmol means milli moles)arrow_forwardSodium fluoride which is used in toothpaste as a source of fluoride, can be produced in the reaction of sodium metal with fluorine gas. In this reaction, which element is reduced and which element is the reducing agent? fluorine is reduced and sodium is the reducing agent sodium fluoride is reduced and sodium is the reducing agent O sodium is reduced and fluorine is the reducing agent O sodium fluoride is reduced and fluorine is the reducing agentarrow_forward
- Some properties of element Y are listed. • It reacts with hydrochloric acid to make hydrogen gas. It reacts with steam but not with cold water. The oxide of Y cannot be reduced by carbon. What is element Y? А соpрer B iron C magnesium D sodiumarrow_forwardwhat is the physical state of element C? what is the physical appearance of element C? what is the color of element C?arrow_forwardIn a chemical reaction, atom type, atom number and total electrical charge is conserved. According to this information what is X in the following reaction? 5Fe+2 +MnO4" +8H* ==> 5Fe+3 +X+ 4H2O O Mn O Fe+2 O MnO O Mn+2 O Fe2O3arrow_forward
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