What are the compouds formed by the elements of Group VIIA and VIIB?

Q: Why do Na and K have similar properties?

A: Valance shell: It is the outermost shell of an atom. The electrons of the valance shell have the…

Q: What ions are possible for the two largest stable elements in Group 4A(14)? How does each arise?

A: The atomic number of Sn is 50 so its electronic configuration is [Kr] 5s24d105p2. It can lose 2…

Q: What is a pseudo–noble gas configuration? Give an exampleof one ion from Group 3A(13) that has it.

A: A noble gas configuration is an electronic configuration in which the ion has completely filled…

Q: Which of the following series is isoelectronic? O a. H, He*, Li2+, Be3+ O b. 02-, 1", Ar, Na*, Mg²+…

A: The species which have the same number of electrons are isoelectronic to each-other.

Q: Rank lithium, fluorine, and nitrogen in order of decreasing ionization energy

A: Introduction :  Ionisation energy is the amount of energy required to remove the highest energy…

Q: Draw electron-dot structures for atoms of the following elements.a. magnesium b. thallium c. xenon

A: Electron dot structures are actually leis dot diagrams that describes the bonding, the number of…

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: Write the number of valence electrons in the elements Rb, Al, Sb, Te and I?

A: Rb=1 Al=3 Sb=5

Q: Arrange in order of increasing nonmetallic character. (a) the Period 3 elements Cl, Si, and Na (b)…

A: All the chemical elements of the periodic table can be broadly divided into three categories,…

Q: Write the electronic configurations of the third-row elements: Na, Mg, Al & Si, and indicate or…

A:

Q: Write the electron configuration of sulphur using the Aufbau principle?

A: The electron configuration of sulphur ( S1632 ) :  Total number of electrons in a S atom = 16 1s2…

Q: How does ionisation energy change going down group 2 and why?

A: Ionization Energy: The amount of energy required to remove the loosely held electrons from an…

Q: When a nonmetal oxide reacts with water, it forms an oxoacid with the same oxidation number as the…

A: Hi, since you have posted questions that has multiple subparts. We will answer the first three…

Q: When a nonmetal oxide reacts with water, it forms anoxoacid with the same nonmetal oxidation state.…

A: Since there are multiple sub-parts in the question , only the first 3 sub-parts of the question are…

Q: Which is NOT a property of Fluorine? a) pale-yellow gas b) strong nonmetallic c) has 7 valence…

A: Fluorine is a halogen that belongs to 17th group of periodic table. Furthermore, it is present in…

Q: Which of the se pairs of elements would be most likely to fom an jonic compond a:) P and Br b.) Cu…

A:

Q: Write the electron-dot symbol for any element X in group 3A.

A: Lewis structure represents the valence shell electrons in a compound. It shows the distribution of…

Q: Rank the elements from highest to lowest ionization energy. To rank items as equivalent, overlap…

A: • The given elements are -  F, N, O, B , Li and Na    • We need to rank the given elements from…

Q: Which neutral atom is isoelectronic with O2+? neutral atom:

A: The atoms, ions or molecules  have same number of electrons is called isoelectronic.

Q: Give the general electron configuration of Group 1 and Group 2.

A:

Q: Explain the relationship between Coulomb's Law and ionic bonds.

A: Ionic bonds consists of +ive ions called cations and -ive ions called anions.

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: Write the full electron configuration of manganese.

A: Using Rules of electronic configuration we can find electronic configuration , the atomic number for…

Q: Write the number of valence electrons in the elements Ca,Si,Kr,S and Na

A: The given elements are, Ca Si K S Na

Q: Fill in the orbital energy diagram for sulfur. 3p 3s E 2p 2s 1s

A: The atomic electronic configuration of sulfur (Z=16) = 1s22s22p63s23p4  In the given orbital energy…

Q: Until the early 1960s, the group 8A elements were calledthe inert gases. (a) Why was the term inert…

A: (a) The term inert is used for the unreactive elements which are not involved in any reactions. Some…

Q: Explain, using Coulomb's law, the general trend in second and successive ionization energies across…

A: Periodic trends

Q: If the radius of atom X is greater than the radius of atom Y, then it is also likely that

A: Given that the radius of the atom X is greater than the atom Y

Q: Which of the following atoms and ions is (are) isoelectronic with Si: Ar, S2+, Ne, Al3+, P3−, As3+?

A: Isoelectronic species: The atoms or the ions which contain the same number of electrons ate called…

Q: Using its electron configuration, explain why antimony can form 3+ or 5+ cations.

A: Atomic number of antimony (Sb) = 51  So, it has total 51 electrons

Q: Why is agron the smallest than the other elements in period 3?

A:

Q: Order each of the following sets of five atoms and ions according to increasing size. ("1" smallest…

A: The order of the size of the elements according to increasing size is given below

Q: Which of the following pairs is isoelectronic I Al^ 3+ and B^ 3+; S^ 2- and Ne; Li and K^ + ;Na *…

A: Elements having the same number of electrons are said to be isoelectronic. An atom, on accepting…

Q: Which of the following pairs are NOT isoelectronic?     N3- and P3-      S2- and Cl-      F- and…

A: Given here pairs of species and we are asked to find which one is notan isoelectronic pair.

Q: There are properties associated with electromagnets. O a four O b one three two

A: Magnets in which magnetic field is produced by the electric current are called electromagnets.

Q: 13. The electron configuration of Argon (Ar) differ from those of Chlorine (CI) and Potassium (K) by…

A: The electronic configuration of the given elements are

Q: Which of the following is series of isoelectronic atoms and/or ions? OB, C, N, O O Sn, As, S, F O…

A:

Q: Which of the following is Not isoelectronic with Argon A. K+   b. P3-        C.   Ca+2     D.…

A: We have to predict the ion isoelectronic with the Argon.

Q: Moseley’s experiments on X rays emitted from atoms led tothe concept of atomic numbers. (a) If…

A: a.  Now to see which element is placed next to chlorine in the order of increasign atomic mass we…

Q: Consider the elements selenium (Se) and bromine (Br). Whichhas the higher first ionization energy?…

A: From the given two elements which has higher first ionization energy and higher electron affinity…

Q: Which of the following species is not isoelectronic with the others? O a S Ob. Ar Oc. P3 Od. Ca

A: So now seeing the option we see

Q: Arrange in order of increasing ionization energy (a) the Group 1A elements Na, Cs, and K(b) the…

A: An atom is composed of three main sub-atomic particles; electrons, neutrons and protons. The atomic…

Q: (a) Briefly describe how the atomic radii and ionization energies of group 1A(1) elements compared…

A: Go to 2 step for your answer . Thanku)

Q: Which of the following statements is/are true for the long form of the periodic table? A. It…

A: The statements given for the long form of the periodic table are, A) It reflects the sequence of…

Q: List the characteristic properties of noble gases, alkali metals, halogens, and alkaline earth…

A: The characteristic properties of noble gases, alkali metals, halogens, and alkaline earth metals…

Q: Arrange the atoms in order of decreasing size: S2-, S, and O-2.

A: