1. To what group in the periodic table do the elements listed belong ? 2. Why these elements are called the noble gases ? What is their common characteristic ? 3. Why are light bulbs filled with argon gas rather than oxygen gas ?

Q: Assume the following is a neutral atom. ?p ?n Which of the following atoms does it represent? A…

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Q: Question 49 The spheres below represent Li, Be, B, and F (not necessarily in that order). I. III.…

A: Atom is made up of protons, neutrons and electrons. Nucleus is made up of protons and neutrons.

Q: 15. A student drew atomic models of four elements. Tin, because it has five energy levels with four…

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Q: When cesium reacts with chlorine to form an ionic compound, each metal atom loses ____ electron(s)…

A: Ionic bond is form between two elements having large electronegativity difference.  Ionic bond is…

Q: 69. What does the graph to the right best represent? a) atomic radii of Period 2 b) ionization…

A: Note: They all are very short questions so I am solving all questions. Given: Graph Rare earth…

Q: III. Periodic Properties A. Answer the following questions about elements and their properties based…

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Q: Explain how to find the number of valence electrons of an atom just by looking at the periodic…

A: Any element's electronic configuration represents the electron's allocation in distinct energy…

Q: Two dots between two elements represents...   Question 2 options:   A bonding pair of electrons…

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Q: The octet rule indicates that all of the noble gases have eight total electrons B all of the shells…

A: Octet rule indicates that:

Q: . What is ionization energy? How does it change as you go across a row in the periodic table? Be…

A: 1) It is defined as the amount of energy which is required to remove the most loosely bounded…

Q: There are two naturally occurring isotopes of Copper (Cu). The table shows the two isotopes, their…

A: Given, Relative abundance of Copper.

Q: Answer the following questions about the macronutrients sodium, potassium, and chlorine. a. Is each…

A: If the last electron enters the s-orbital then such elements in the periodic table fall under…

Q: Magnesium has 12 protons. How many electrons are in its second energy level? O 1. two O 2. four 3.…

A: Different energy levels in the atom correspond to the different principal quantum number values (n)…

Q: Complete the sentences below.  If the element name is provided, complete the sentence with the…

A: Electrons are negatively charged particles. They revolve around nucleus in outermost shels of an…

Q: Energy Refer to the correctly filled orbital diagram for aluminum, below, to help you answer this…

A: We have to select the correct statement regarding how aluminum atom ionizes

Q: Part A:  What is the formula for Calcium Fluoride?   Part B:  What is the ratio of Calcium ions to…

A: let see all the parts one by one

Q: how many electrons would an sr atom lose or gain to become an ion

A: Strontium atomhas the following electronic configuration : Sr38 = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6…

Q: Note that there is a difference between a pair of electrons (two dots) and a single electron (one…

A: Chlorine (Cl) Atomic no : 17

Q: How many valence electrons does hydrogen need to complete its shell? Which group is most similar to…

A: To explain: How many valence electrons does hydrogen need to complete its shell.

Q: please answer this question correctly.   1. For a group 15/5A atom, how many electrons must it…

A: The answer is given as follows

Q: How many valence electrons does each of the following atoms have? titanium, ? = 22 iodine, ? = 53…

A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the…

Q: 3. Complete the information in the following table: Number of Valence Element Rb Energy level in…

A: Electronic configuration is arrangement of electrons in shells, subshells and orbitals.

Q: On the subject of the element Sulfur :    A)   How many valence electrons does Sulfur have?    B)…

A: The atomic number of sulfur element is 16

Q: please answer these two questions.   1. write the electron configuration for magnesium atom.…

A: The electron configuration for magnesium atom is      Mg =  1s2 , 2s22p6 , 3s2