Recognize the important subdivisionsof the periodic table: periods, groups(families), metals, and nonmetals.

Q: Should the elemental symbol for lead be written as Pb or PB? What confusion could arise if the wrong…

A: Elemental symbol for lead is Pb and it should be Pb .

Q: Mrs. Smith showed her class three elements and described their properties. Properties of Elements…

A: The data given is,

Q: An atom of rhodium (RhRh) has a diameter of about  2.7×10−8cm2.7×10−8cm. What is the radius of a…

A: The radius of an atom is half of its diameter. 1 Å = 10−8 cm

Q: Classify the following elements as a metal, nonmetal, and a metalloid. 1.) hydrogen…

A: Metal is the element that readily forms cations and shows properties like conductivity, luster,…

Q: The Group 1B metals, Cu, Ag, and Au, are calledcoinage metals. What chemical properties make…

A: The chemical properties of Group 1B metal that makes them suitable for making coins and jewelry has…

Q: Which two elements on the periodic table are in the same period?

A: By studying the periodic table we can easily find out the elements present in same period.  Periods…

Q: Search the web or your textbooks for an illustration of Mendeleev’s periodic table. How many…

A: Given : Mendeleev periodic table  To find : Describe it properly and compare it with modern periodic…

Q: Which of the following elements would be classified as a nonmetal? a.) silicon  b.) francium c.)…

A:

Q: For each of the elements Na, Ni, Al, P, Cl, and Ar, providethe following information:a. Which are…

A: In the periodic table, elements are arranged as a function of their atomic number. There is a…

Q: The radius of a tantalum atom is 142 pm. How many tantalum atoms would have to be laid side by side…

A: Given: Radius of tantalum atom = 142 pm And total distance given = 2.85 mm.

Q: Refer to the periodic table, and find the following information:a. the symbol of the noble gas in…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3 sub-parts. Please resubmit the…

Q: part a. aluminum and iodine Express your answers as ions and chemical formula separated by a…

A: Aluminum exhibit +3 valency and Iodine exhibits -1 valency  Al                     I+3↗     ↖  -1…

Q: What is the periodic table, and what is its significance inthe study of chemistry?

A: The periodic table is the arrangement of 118 elements according to their atomic number that knows as…

Q: Which group of the periodic table is known as the alkalimetals? List their symbols.

A: The periodic table gives the arrangement of elements in the order of increasing atomic numbers. It…

Q: Approximately how many elements are listed in the periodic table? How many can be found in nature?…

A: Periodic table of elements is arrangement of elements in tabulated form. In this, the elements are…

Q: Write the symbol and name for the elements located in the periodic table as follows:

A: a. According to the periodic table, the noble gases are located in the group VIIIA (18) means the…

Q: Write any three differences between metals and non-metals on the basis of chemical properties?

A: Metals: Metals are the majority elements in the periodic table. They include transition metals,…

Q: is chlorine gas an element ?

A: The simplest chemical substance which made up of atoms with the same number of protons and it cannot…

Q: The volume of a single iridium atom is 1.04x10-23 cm³. What is the volume of a iridium atom in…

A: Given: Volume of iridium in cm3 = 1.04 X 10-23 cm3.

Q: Electron- Proton- Atomic number- Atomic mass- Neutron- Nucleus- C. Isotopes or Different Elements?

A: A typical atom is made up of subatomic particles that include electrons, protons, and neutrons.…

Q: Which group of three elements contains a transition metal, a halogen, and noble gas? a) S, I, Cu b)…

A: Since the Halogen elements are F, Cl, Br, I, At And noble gases are He, Ne, Ar, Kr, Xe, Rn

Q: Locate each of the following elements in the periodic table;give its name and atomic number, and…

A: Metals are those substances or minerals which forms naturally below the surface of the earth. They…

Q: . Investigate the history of the discovery of chemical elements. What was the most recent element to…

A: History of the discovery of chemical elements: The discovery of the 118 chemical elements known to…

Q: Locate each element in the periodic table and classify it as a metal, nonmetal, or metalloid. a.…

A: Titanium belongs to group 4 and is present in d block. It is a metal. Chlorine belongs to group 17…

Q: for elements (Br, Ca, Fe, Na, S, Si, and Xe) which of the following term(s) apply? a. metal b.…

A: To classify the elements we have see in which block of the periodic table  the given element is…

Q: Sort the characteristic properties of the following isotopes of nitrogen into their respective bins.

A:

Q: Does fluorine, sulfur, and phosphorus represent elements in a group, a period, or neither?

A: We have to explain if fluorine, sulfur and phosphorus represent elements in a group, a period, or…

Q: In the table below, there are descriptions of an experiment on samples of three different chemical…

A: Properties of metal  •  Lustrous  • High melting point and boiling point.  • Malleable - They can be…

Q: What is the chemical symbol of the element found in the 4th family and 5th period of the periodic…

A: Family in the periodic table is nothing but groups which are the vertical columns. Periods in the…

Q: Which of the following statements concerning the periodic table is incorrect?   a. All the elements…

A:

Q: Name the following: Two elements belonging to the same period as Iron. Two elements belonging to the…

A: Note: According to our guidelines we are supposed to answer only first three subpart. Kindly repost…

Q: What is the chemical symbol of the alkaline earth metal in the same period as chlorine?

A: Given  chemical symbol of the alkaline earth metal in the same period as chlorine

Q: Identify each of the following elements as a metal, non-metal, or metalloid: (a) phosphorus, (b)…

A:

Q: Assume you have a pure sample of chemical element. Based on the characteristics below, what…

A:

Q: Defend or refute the statement • The separation of a mixture may result in the production of an…

A: Mixture is a composition where two or more different components are mixed . The process of parting…

Q: Among the 118 known elements, there are approximately equal numbers of metals and nonmetals. True or…

A: An element ia a pure substance made up of the same kind of atoms .At present 118 elements are…

Q: Which of the following elements is NOT a metal? A) arsenic B) indium C) iridium D) lithium E)…

A: Arsenic is a metalloid and we can say it a metal.

Q: In the periodic table, calcium, element 20, is surrounded by elements 12 magnesium , 19 potassium,…

A: The most resemple element of calcium atom is magnesium and Strontium.

Q: What is a period in the periodic table? From what does it derive its name?

A: The elements are arranged in a periodic table. The properties of elements have been studied and…

Q: When elements are arranged by increasing atomic number, and by periods according to their…

A: According to the given question we have, as we move across the period the atomic number increases.…

Q: What was the name of the scientists who discovered the arrangement of the periodic table?

A: Periodic table:  It is a tabular representation of the chemical elements, which are arranged in…

Q: Since different isotopes of the same element have the same chemical behavior, how can they be…

A:

Q: Which period of the periodic table  has no metals has no nonmetals has one post transition metal…

A: In periodic table, total of 18 groups and 7 periods are Present, in which these are according to…

Q: Which statements are true? A. There are 11 elements represented in the periodic table by letters…

A:

Q: Identify each of the following elements as a metal, nonmetal,or metalloid: (a) phosphorus, (b)…

A: Metals and Nonmetals are different types of materials present around us. Metals (like copper and…

Q: what are isotopes

A: The different variants of a particular element, that are differed by the number of neutrons. In…