An unknown element contains 56 protons, 54 electrons, and has a mass number 135. Answer the following questions: (b) What are the name and symbol of this element?  (d) What is the charge on this ion? Is it a cation or an anion?

Q: 2. For each ionic depiction, give the name of the parent atom, its mass number, and its group and…

A: Atomic number = Number of proton Mass number = number of proton + number of neutron Atom is…

Q: In Example 2-1, we established that the mass ratio of magnesium to magnesium oxide is 0.455 g…

A: We have been provided with the ratio of magnesium to its oxide. Let us calculate other required…

Q: 4. When writing a complete atomic symbol, there are four numbers used – in the upper-left,…

A: The atomic symbol describes an atom completely.

Q: For each ionic depiction, give the name of the parent atom, its mass number, and its group and…

A: Atomic number of an atom is equal to number of protons present in it. For a neutral atom, the number…

Q: There are three primary subatomic particles that comprise an atom. (i) Name the three subatomic…

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Q: In Example 2-1, we established that the mass ratio of magnesium to magnesium oxide is 0.455 g…

A:

Q: 4. What is the atomic symbol of an ion with (a) 16 protons, 18 neutrons, and 18 electrons? (b) 16…

A: If ions contain more number of electron compare to number of protons then ion has negative charge…

Q: Part one: Write the names of the following compounds. Show all of your work to get full credit. (a)…

A: The name of the compounds are :  (a) NaNO2   : Sodium nitrite (b) Fe(OH)2  : Iron (II) hydroxide or…

Q: In each case, calculate the appropriate ratio to show that the information given is consistent with…

A: Given information, (a) Both ammonia (NH3) and hydrazine (N2H4) are composed of nitrogen and…

Q: How has the understanding of the structure of the atom changed over time? Briefly describe the…

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Q: Chromium reacts with oxygen to form threedifferent compounds, X,Yand Z. It was found that, for every…

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Q: For each of the following pairs of ions, write the symbol for the formula of the compound they will…

A: Ionic compounds are compounds that formed after the donating electrons from one atom/group to…

Q: Give the symbol, including the correct charge

A: The charge on an ion or species is determined as per the octet rule. Every species wants to have…

Q: Use the periodic table to give the name and symbol for each of the following elements: (a) the…

A: In a period the electrons are filled in the same shell and in a group, the electrons are filled in…

Q: Write the symbol for each of the following ions. (Enter your answer in the form  A X q± Z .) (a) the…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: Write the following from largest to smallest size. (Use the appropriate <, =, or > symbol to…

A: Comparing the size of a cation and neutral atom, cation will have smaller size. Since Mg is below Be…

Q: 8. Europium is the element responsible for the red phosphors in a colour TV screen. The mass…

A: #8: We are given the mass spectrum of the isotopes of the element Europium(Eu).  According to the…

Q: What are (i) mass, (ii) charge and (iii) location in the atom of each of the following sub-atomic…

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Q: A hypothetical element has only 3 isotopes, with the following masses: Isotope 1:  44.98 u Isotope…

A: Isotopes are the elements which have same atomic number but exhibits different mass number. To…

Q: ne ion with a 1+ charge, atom: ne ion with 54 electrons, 53 p e ion with atomic number 15

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Group 14 Elements

The following elements come under group 14 of the periodic table.