Lithium’s properties are more likemagnesium in group 2 than sodium. Use what youlearned about atomic sizes to explain this behavior.

Q: which is the Period 2 element with-the Smallest atomic radius ? A.) Li D.) Ne C.) Be D.) Ra

A: Li, Be and Ne belong to the second period of the periodic table. Whereas, Ra belongs to the 7th…

Q: According to general trends in the periodic table, predict which element in each of the following…

A: According to general trends in the periodic table, which element in each of the given pairs has the…

Q: What are the elements under Group 4A? Tabulate your answer by giving its description, importance,…

A: Group 4A contains the elements  of carbon family having C , Si , Ge , Sn , Pb .

Q: Choose the element with the higher first ionization energy in each pair.a. Br or Bi b. Na or Rb c.…

A: Ionization energy :  From the ground state of an atom , if one electron is removed than the energy…

Q: Which element would have the greater electron affinity, S or O? Explain using the concepts of…

A: S (Sulphur) Atomic number = 16                   Electronic configuaration = 1s2 2s2 2p6 3s2 3p4   O…

Q: What trend did you observe in the reactivity of the halogens from top to bottom in Group 7A? Explain…

A: The size of the nucleus increases down a group (F < Cl < Br < I < At) because the…

Q: Which element would you expect to be less metallic?(a) Sb or As(b) Si or P(c) Be or Na

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Q: Mention 3 general characteristics of the s-block elements that distinguishes them from the other…

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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: Which element has the smallest radius? S, Nb , Cs

A: Atomic Radius- It is defined as distance of last shell electron from nucleus of an atom is called…

Q: Which statement is true about effective nuclear charge?a) Effective nuclear charge decreases as we…

A: The compelling or effective atomic charge is the overall positive charge acquainted by an electron…

Q: What element in period 3 is a metalloid?   Give this element’s ground state noble gas orbital…

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Q: Choose the element with the higher first ionization energy from each pair.a. Br or Bi b. Na or Rb c.…

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

Q: What are the exceptions to the periodic trends in first ionization energy? Why do they occur?

A: The energy required for the removal of an electron from its gaseous atom or ion is said to be…

Q: Have each member of your group sketch a periodic table indicating a periodic trend (atomic size,…

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Q: 2. Use the first-row transition metals (Sc to Cu) as an example to illustrate the characteristics of…

A: First row transition metals from Sc to Cu are Sc, Ti, V , Cr , Mn, Fe , Co , Ni, Cu

Q: All of the following statements concerning the characteristics of the halogens are true except…

A: Ionization energy is the amount of energy required to remove the outermost shell electron of an atom…

Q: Does the reaction of a main-group nonmetal oxide in water produce an acidic or a basic solution?…

A: All nonmetals form covalent oxides with oxygen that react with water to form acids (or) with bases…

Q: Arrange the following in order of decreasing atomic radius: Sr, O, Si, Cs, S, Ge

A: The atomic radius for a given element can be defined as the measure of the measure of the size of…

Q: Arrange these elements according to atomic radius. Largest radius to Smallest radius O, S, Po, Se,…

A: The elements given are O, S, Po, Se, Te and all these elements belong to the group 16 of periodic…

Q: why does the change for the atomic radii of the elements in period 3 from sodium to argon look…

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Q: Arrange the following elements in order of atomic radius (from smallest to largest): Smallest atomic…

A: Solution: N, F, Ne - second-period elements. N, As, Bi - is 15 group of elements.  We know that On…

Q: (a) What is the trend in first ionization energies as one proceedsdown the group 7A elements?…

A: Moving from Fluorine to Iodine in group 7A, first ionization energies decrease and atomic radii…

Q: The electron affinity of each group 5A element is more positive than that of each corresponding…

A: The electron affinity is the tendency to attract the shared pair of electrons. The size of the…

Q: Identify: - Element in Group IVA that has the lowest atomic size - Element with a valence…

A: The atomic radius of a chemical element is the mean distance from the center of the nucleus to the…

Q: Which element below would have the largest atomic radius?* Barium Beryllium Calcium Magnesium

A: Generally in a periodic table form left to right in a period the atomic radius decreases while in a…

Q: Hydrogen is an unusual element because it behaves in someways like the alkali metal elements and in…

A: (a)Electron affinity is the amount of the energy released on the addition of an electron to a…

Q: 8. What is the relationship between an electron configuration and an orbital diagram? Draw the…

A: Given : Silicon  To find : Orbital diagram and electronic configuration  Solution : Silicon is an…

Q: Arrange the following elements in the increasing order of metallic character: Si, Be, Mg, Na, P.

A: In periodic table, metallic character of an element increases ongoing down a group. On the other…

Q: (a) Among the nonmetallic elements, the change in atomic radius in moving one place left or…

A: To get:   a) Explain the observations of  movement is automic radius. b)  Arrangement of atom in…

Q: Define atomic radius. For main-group elements, describe the observed trends in atomic radius as…

A: Atomic radius and its trends in atomic radius are explained below-

Q: Using the idea of dobereiner’s triads, what conclusion could have been made about magnesium, had…

A: Dobereiner’s triads : To segregate and group similar elements together  Sir Johanan Wolfgang…

Q: The first element of every group behaves differently from the other elements in the same group.…

A: Lithium shows anomalous behavior because it has the smallest size in the group. Since it has the…

Q: Which element would you expect to be more metallic?(a) Ca or Rb(b) Mg or Ra(c) Br or I

A: The metallic character is the tendency of an atom to lose electrons. as we moving from left to right…

Q: Due to periodicity, which element would you expect to behave most like molybdenum? (a)   Tungsten…

A: The periodicity is repetition of elements with similar properties after certain regular intervals…

Q: Arrange the following elements in order of increasing atomic radius: Al, B, C, K, and Na?

A: In periodic table, down the group atomic radius increases due to increase in number of shells.…

Q: Arrange the following in order of decreasing atomic radius: Al, Mg, Na, O

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Q: Which pair of elements would you expect to have the most similar atomic radii, and why?a. Si and…

A: The atomic radius decreases on moving across a period because, with the increase in atomic number,…

Q: The element with electronic configuration [Ar] 3dº4s34p² is a typical metal in Group 14 (Group IV)…

A: The given electronic configuration of the element is : [Ar] 3d104s24p2

Q: 15. The first four ionization energies of an element are approximately 579 kJ/mol, 198ð kJ/mol, 2963…

A: Answer: Minimum energy required to remove the most loosely bounded electron from an isolated gaseous…

Q: The electron affinity of each group 5A element is more positive than that of each corresponding…

A: The periodic table can be classified in four blocks; s-block, p-block, d-block and f-block. This…

Q: Identify the isoelectronic series? Select one: O a. S2, CI, Ca?+, K* O b. Cs*, Rb*, K*, Na* O c. Li,…

A: Isoelectronic species are defined as the species which have same number of electrons in their…

Q: Why Lanthanides and Actinides are separated from the other elements? Please explain briefly.

A: Lanthanides and Actinides are separated from the other elements that have to be explained below.

Q: Exceptions to the trend of increasing first ionization energy and increasingly negative (i.e., more…

A: In the periodic table there are 18 groups and seven periods. Among them, the group 15 also known as…

Q: What is the characteristic valence electron configuration of the group 7 A elements, the halogens?

A: The halogens elements contain valence electrons of seven; two in s-orbital and seven in p-orbital.

Q: Given the following information, identify the group from the periodic table that contains elements…

A: There are many trends in inorganic chemistry. These trends are atomic size, reactivity, metallic…

Q: Rank Na, S, and O by increasing atomic radius. Explain

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