1. Use the second member of each group from Group IA to Group 7A to show that the number of valence electrons on an atom of the element is the same as its group number.

Q: Use the second member of each group from Group IA to Group 7A to show that the number of valence…

A: Group 1A Second element is Na (Z = 11) Electronic configuration 1s2 2s2 2p6 3s1 Group 2A Second…

Q: Which atom’s valence electrons experience the greatest effective nuclear charge?(a) the valence…

A: Effective nuclear charge refers to the net charge experienced by the electron in an multi-electron…

Q: Which of the following pairs are NOT isoelectronic?   a. F- and Mg2+   b. Cl- and Ca2+   c.…

A: Isoelectronic species have the same number of electrons, and in questions we have to tell that which…

Q: Explain the relationship between the properties of an elementand the number of valence electrons…

A: Valence electrons are the total number of electrons present in the outermost orbital of an atom.…

Q: Rank the ions in each set in order of decreasing size, and explain your ranking:(a) Se2-, S2-, O2-…

A: Rank the ions in each set in order of decreasing size, and explain your ranking: (a) Se2-, S2-, O2-…

Q: Show the electron configuration of the following elements and underline the configuration that shows…

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Q: part 1:  Given an electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 Give the electron…

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Q: 2. Two possible models for arrangement of electrons in Li are shown below: electron "a" electron "b"…

A: The amount of energy required to remove an electron from an isolated gaseous atom is called the…

Q: 8.2 Use the second member of each group from Group 1A to Group 7A to show that the number of valence…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: How many 4d electrons are there in Pd2+? What +2 ion in the fourth period has the same number of 3d…

A: There are 118 chemical elements in a periodic table. The periodic table is divided into 18 groups…

Q: How can the periodic table be used to determine the number of valence electrons in a representative…

A: Periodic table is a table where chemical elements are arranged according to their atomic number in…

Q: Elements in group 17 have how many valence electrons?

A: Group 17 belongs to Halogens . Halogens has seven valence electrons on their outer most electronic…

Q: Write the electron configuration for Al3+. Also, identify which of these electrons are valence…

A: Atomic no.of aluminium is 13 and it is a p-block element. Having electronic configuration: 1s2 2s2…

Q: ns2

A: Different electronic configurations are given and asked valence Electron configuration of group 2…

Q: 4) How many valence and core electrons does each of the elements above have? # Valence electrons a)…

A: The outermost electrons of an atom are called the valence electrons. In-order to find out the…

Q: Section 1. Answer the following questions about magnesium: a) Write the longhand and shorthand…

A: a) For magnesium, Mg

Q: What is the ion configuration of the chlorine ion, CI? O A. 1s 252 2p6 3s? 3p3 O B. 1s2 2s? 2p® 3s²…

A: Electronic configuration of chlorine ion ?

Q: Consider the two electron arrangements for neutral atoms A and B. What is the atomic number of A? A…

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Q: Based on what you just learned about ionization energies, explain why valence electrons are more…

A: The electrons in the innermost shell are called the core electrons while the electrons in the…

Q: 1. Silicon has the electronic configuration 1s2 2s2 2p6 3s2 3p2.  Discuss how you can determine that…

A: Since you have asked multiple questions, we will solve the first three questions for you. If you…

Q: Write the valence electron configuration for SF6.

A: Sulphur is in Group 16 and thus has 6 outer electrons. The Electronic configuration of sulphur is…

Q: How does valency vary in a group and period in the periodic table?

A: As you go left to right across a row called periods, the number of valence electrons increase by 1.…

Q: Construct an orbital diagram to show the electron configuration for a neutral magnesium mg

A: Mg has 12 electronn  So electronic configuration will be according it  Electron is filled according…

Q: 1. How many valence electrons would atoms of the element boron (B) have? 2. How many valence…

A: The answer are as follows,

Q: The first five ionization energies of an element in period 3 is shown in the graph below. Predict…

A: As told in the question, the element belongs to the 3rd period.A drastic change is observed from 3rd…

Q: a) Which element is least likely to lose an electron? Choose one: He, Be, Na, Mg, Ca, Sr, b) Why…

A: a) The element which is least likely to lose an electron has to be identified b) The reason why the…

Q: What is electron affinity? How it varies in groups and periods of the Periodic Table. Note please…

A: The addition of an electron to any gaseous atom or any ion in its ground state, causes change in the…

Q: What pair has the larger atom or ion listed first? Al3+, Al O, O2- K+, Ca2+ N, N3- O2-, Cl-

A: Cations are formed by atoms by losing electrons; hence, the size of the cation formed is always…

Q: For each of the following groups, place the atoms and/or ions in order of decreasing size. b. Na,…

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Q: 1. Show the electron configuration of the following elements below and underline the electrons that…

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Q: 1. List three things that all the atoms of the elements in period 3 have in common.

A: Step:1         Hey since you have posted multiple questions         we will answer first…

Q: Part A: Label the number of valence electrons each group on the periodic table has. Group 1…

A: Valence electron = Number of electron present in outer most shell

Q: separate

A: This question is related to periodic table.

Q: Write down the orbital diagram for an ion that contains 19 protons and 18 electrons.

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Q: How many valence electrons does an atom of any element in group 6A have ?

A: Given information,      Element in group 6A

Q: I discovered a new element and called it Ferrellium. It is shiny and malleable and reacts VIOLENTLY…

A: In this question, we have to identify the properties of given element with pre-discovered element's…

Q: Predict the number of valence electrons for a group IVA/14 element A)1 b)3 C)8 D)4

A: The outermost electrons of an atom are called the valence electrons. In-order to find out the…

Q: How does the atomic radius change from top to bottom in a group in the periodic table?

A: Atomic radius is the radius of an atom . Definition - It is the distance from the centre of an…

Q: The maximum number of vale

A: Valence electron is an outer shell electron that is concerned with an atom and that can participate…

Q: The total number of electrons, valence electrons, and valency of He, C, and N?

A: Given  Atom = He , C , N  Total Number of electron ,Number of Valence electron ,Valency = ?

Q: 9) Explain to me why the atomic radii decrease as you move across a period rather then up a group or…

A: Across a period the atomic radii is governed by effective nuclear charge. And across a group it is…

Q: 23.) How does the electron configuration of polonium (Po) end (i.e., what are its valence…

A: The question is based on the concept of electronic configuration. we have to write valence shell…

Q: 2) Write the full orbital diagram for a carbon atom

A: The C atom atomic number is 6. Its electronic configuration is 1s2 2s22p2. The orbital diagram is…

Q: Explain why electron affinity increases across a period and decreases down a group

A: Electron affinity -it is the amount of energy released when an electron is added to a neutral atom…

Q: X). If this element loses four electrons, it changes to an ion X“. a) What is the chemical symbol of…

A: a. From the given figure, it is certain that number of electrons in X is 50. Therefore, the element…

Q: Write the full ground-state electron configuration for each:(a) Br(b) Mg(c) Se

A: Given: The given atoms are  Br, Mg, and Se To find: The full ground state electron configuration of…

Q: On your paper, write the full electron configuration for tellurium (Te). In the box below, list the…

A: The arrangement of the electrons in the different atomic orbital of an atom is known as the…

Q: Write the electron configuration for each ion.a. Cl - b. P3 - c. K+ d. Mo3 + e. V3 +

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Q: Write out the full electron configuration for a magnesium ion with a charge of 1 +

A: Answer :-   The electron configuration of Magnesium ion with a charge +1 is 1s2,2s2,2p6,3s1