give any one example of isodiaphers

Q: MCQ 40: The color of lodine (1) is A. grey B. black (s) C. purple (vapors) D. all of above

A: Iodine is element in the periodic table having elemental symbol I and atomic number 53 and belongs…

Q: what are the uses of inorganic chemistry in medicine or pharmacy

A: Inorganic chemistry can be defined as the branch of chemistry that deals with substances containing…

Q: What is an extensive property? What is an extensive property of oxygen?

A: Extensive property is the property which depends upon the amount of matter or mass. Mass, volume,…

Q: A hypothetical metal has a theoretical density of 12.44 g/cm3. This metal adopts a cubic crystal…

A: Density is defined as mass per unit volume. For a crystal, the density is calculated by the formula…

Q: A 93.6 g sample of ground water is found to have a lead concentration of 15.65 ppm. Calculate the…

A: Given : Mass of sample = 93.6 g Concentration of lead = 15.65ppm

Q: a The relative ages of the rocKS b The composition of the rock

A: Dear student I have given answer to your question in the image format.

Q: What is the surface appearance of a mercury

A: Mercury is a rocky planet with a huge iron core which makes up a large part of its interior.…

Q: (a) List four physical characteristics of a solid metal. (b) List two chemical characteristics of a…

A: PHYSICAL CHARACTERISTICS: The properties of elements or compounds noticed without any change in the…

Q: Use the following key to classify each of the elements below in its elemental form: C. Metallic…

A: The classification of elements are given below

Q: What is the difference between a rock and a mineral? 2. Why can the minerals in a rock be a clue…

A: Rock : A rock is an inorganic solid that has formed naturally and has no chemical composition or…

Q: Look at the locations of potassium andcalcium on the periodic table. Form a hypothesis toexplain why…

A: Potassium is found in 1st group and 4th period of the periodic table. It is in the column of alkali…

Q: Why is mercury a liquid? Why does it have a 1ion?

A: There are three categories of elements in periodic table. These are metals, non metals and…

Q: A hypothetical metal has a theoretical density of 11.92 g/cm3. This metal adopts a cubic crystal…

A:

Q: Copper has FCC crystalline structure. The di b0oy and atomic weight are given 8.93 g/cm 3 and 63.54…

A: Copper has FCC crystalline structure. Then the total number of atoms, Z=4 Density=8.92 g/cm3  Atomic…

Q: I need research on this subject: Physical and chemical structure of Wyoming bentonite 01 19:35

A:

Q: The chemical analysis of a macromolecule has been provided. What is this macromolecule? Element…

A: The empirical formula of any compound can be determined by using the percentage mass composition of…

Q: The radius of an Al atom is 0.143 nm. How many Al atoms would have to be laid side-by-side to give a…

A: While calculating the number of items, divide the total length by length of each value.

Q: a. Write the electron configuration for Si. How many valence electrons does silicon contain? [Select…

A:

Q: A hypothetical metal has a theoretical density of 11.89 g/cm3. This metal adopts a cubic crystal…

A: We are given the density and edge length in a unit cell. We have to find the atomic weight of the…

Q: A hypothetical metal has a theoretical density of 12.38 g/cm3. This metal adopts a cubic crystal…

A: We have to calculate the atomic mass of metal.

Q: Formation of most of the clouds is in O A traposhere OR strodbuphere Oc. mesosphere O D.…

A: Clouds are formed due to condensation of water molecules which have evaporated from earth surface .

Q: What are Metallic atomic solids? Give some examples?

A: Solids have a fixed shape and fixed volume and are one of the important states of matter. The atoms…

Q: Prelaboratory Assignment: The Alkaline Earths and the Halogens 1. All of the common noble gases are…

A: Boiling point of compound is defined as the temperature at which vapor pressure of liquid equals to…

Q: An electrical insulator is a material

A: An insulator can be considered as a pure chemical element.

Q: d.) Explain the following: i) The melting point of silicon is much greater than that of phosphorus.…

A: Melting point is defined as the temperature in which solid started to get melt into liquid form.…

Q: Classify V ubstance shown in the sketch below. You can click the other tabs in the sketch to get a…

A: It is not a solution, and solutions are a homogenous mixture It is not a pure substance, as the pure…

Q: Describe the basic structure of the periodic table

A: I have shown the basic structure of the modern periodic table in step 2.

Q: 1. If 23.6 grams of nitrogen are mixed with 17.3 g of hydrogen, how much ammonia may form?

A: Given :-  Mass of Nitrogen, N2 = 23.6 g  Mass of Hydrogen, H2 = 17.3 g  Mass of Ammonia, NH3 = ?…

Q: Which is TRUE regarding the conduction of electricity at regular conditions for metals, nonmetals…

A: Option A is correct answer.

Q: what parts of the earth make up the Lithosphere?

A: lithosphere

Q: The average atomic masses of some elements may vary, depending upon the sources of their ores.…

A: Introduction: Percentage abundance: The percentage abundance of an element is defined as the ratio…

Q: MCQ 121: With an increasing atomic number of Halogens, the A. Van der Waals forces decrease B.…

A: The given options are,

Q: balanced

A: According to the question, we need to write the chemical reaction equation of solid calcium…

Q: The correct chemical formula for the combination of Ca2+ and PO43- is:

A: The combination of  Ca2+ and PO43-    :

Q: Why is stratospheric ozone beneficial to life on Earth, whereas tropospheric (ground-level) ozone is…

A: Stratospheric ozone layers protect us from UV rays coming from sun . which can causes skin cancer.

Q: describe the orbitals that make up n=3, describe the orbitals and their energy levels and how they…

A: n is the principal quantum number.  So, n = 3 corresponding to l (azimuthal quantum number) = 2, 1…

Q: Relate the properties of alkali and alkaline earth metals to their locations on the periodic table…

A: Alkali metal is placed in group 1 . As they are placed in group 1 ,they show +1 valency because they…

Q: Draw a molecular level picture and use it to describe the model(s) of bonding present in each…

A: Copper is a metal. Thus bonding present in copper is metallic bonding,  Graphite is a non-metal,…

Q: 12. A student writes the following incorrect chemical equation for the synthesis of magnesium oxide.…

A: Solving only first question in accordance with guidelines.

Q: Q.6:define the following: a. molecular engineering b. The atomic mass unit c. Periodic Table d.…

A:

Q: Why do the rows in the periodic table get progressively longer as you move down the table? Explain…

A: The periodic table consists of horizontal rows called periods and vertical columns called groups.…

Q: Describe in details the twelve-basic principle of Green Chemistry.

A: The term ''Green Chemistry'' is a well-known term to us in recent days. Green chemistry is an…

Q: A hypothetical metal has the BCC crystal structure, a density of 7.24 g/cm3, and an atomic weight of…

A: Given, BCC crystal structure. Density = 7.24 g/cm3 Atomic weight = 48.9 g/mol    To find : Atomic…

Q: Physical chemistry should be studied by students in chemical engineering because * It applies…

A: It deals with experimental observations.

Q: Choose one or more: O A. CO,(g) +C(s.graphite) → 200(g) O B. C(s,graphite) +O,(g) –→ Co,(g) O C.…

A: ∆Hrxn is the standard enthalpy of reaction. This is calculated by subtracting the sum of standard…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.