Classify each of the following elements as a main-group or transition element. Also,specify whether they are metals, metalloids, or nonmetals: Na, Re, S, I, Kr, Mg, U, Si, B, Al, As, H.

Q: Which of the following lists contain an alkali metal, a halogen and a metalloid (semi-metal) in that…

A: In the periodic table, alkali metals are Group-1 elements.  Halogens are Group-17…

Q: Use the periodic table to classify each element as a main-group metal, a transition metal, an…

A:

Q: Moving from the element with atomic number 10 to atomic number 11 on the periodic table, there is a…

A: The atomic number of neon is 10 and the atomic number of sodium is 11. The Neon is a noble gas…

Q: Name one metalloid in period 4 and one non-metal in period 5:

A: The metalloid in period 4 is ,        Germanium  (Ge)       Arsenic (As)

Q: 2. The elements vary from metals through metalloids to nonmetals. They form halides in oxidation…

A: Given, The elements of the unknown group contains metals, metalloids and non metals. The halides of…

Q: Classify the following three elements as a metal, metalloid, or nonmetal: P, Si, Al.

A: Answer -  1. Al  - Metal   Explanation  - Aluminum (Al), also spelled aluminium, chemical element, a…

Q: Based on the formula for the sulfate ion, predict the formula for (a) the selenate ion and (b) the…

A:

Q: Differentiate between metal and non-metal on the basis of their chemical properties.

A: Metals are lustrous and opaque elements which are good conductor of heat as well as electricity. And…

Q: have varied physical properties and are found in many different compounds. Nonmetals Metals…

A: Most of the elements (93 elements) of the periodic table are metallic. Some elements present on the…

Q: Silicon (Si) is the semiconductor indust the Group IV (4) of th Si-29. i) (ii) Explain what a How…

A:

Q: Classify each element in the fourth row of the periodic table as a metal, nonmetal, or metalloid.

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

Q: Which of the following elements would you expect to be most similar: nitrogen, chlorine, barium,…

A: Elements belonging to the same group in the periodic table display similar properties.

Q: Determine the systematic name for CaSO4

A: Determine the systematic name for CaSO4

Q: Which equation correctly represents the first ionization of calcium? Ca (g) – Ca (g) + e O Ca" (g) →…

A: First ionization energy - The energy needed to remove the outermost,  or highest energy,  electron…

Q: what is the elemental form of fluorine? F(g) F- (aq) F+(g) or none of the these?

A:

Q: Read the given expression. X number of protons - number of core electrons Which of the following…

A: Answer: option c. X is the effective nuclear charge and it increases across a period.

Q: Which of the following groups of elements are not all metals? O AI, Zn, As Bi, W, Mo Ba, Sr, Pb Ag,…

A: an element is said to be a metal if it easily loses its valence electron in favorable condition.

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 only the periodic table arrange the following elements in order of increasing atomic radius:…

A: Atomic radius - It is the distance between nuclei of an atom to the valence electron of an atom. It…

Q: Og is the noble gas after Rn. To go from [Rn] to [Og], you must fill four subshells (s, p, d, and f)…

A: The angular momentum quantum number (l) for g orbital= 4 The formula for maximum number of electrons…

Q: Classify each element as a metal, a semimetal, or a nonmetal.    Ga, Ge, Sc, S, Sb, Bi,Se

A:

Q: 4. Sodium forms a body centered cubic crystal. Calculate the density of sodium metal. Propose a…

A: In a body centered cubic crystal: Body diagonal=4r where r is atomic radius of atom Density=ZMa3NA…

Q: Which of the following elements would you expect to have chemical properties most similar to those…

A: on the basis of the periodic table, we can say that the elements that belong to the same group have…

Q: Ca^2+ and S^2- as a chemical formula

A:

Q: 15. (a) b) c) d) Identify the element that is described by the following information. Refer to a…

A:

Q: Og is the noble gas after Rn. To go from [Rn] to [Og], you must fill four subshells (s, p, d, and f)…

A: The explanation is given below-

Q: Which of the following elements would you expect to have properties similar to those of barium (Ba)?…

A: Which of the given element would have a similar properties like Barium (Ba) = ?

Q: 3. Classify each of the following elements as a noble gas, a representative element, a transition…

A:

Q: Arrange in order of increasing nonmetallic character. (Use the appropriate symbol to separate…

A: Non metallic character : It is the tendency of elements to gain electron and form negative ions…