In the following diagram, blue spheres represent the element A and yellow represent the element

Q: Examine the statement “No two elements have the same line spectrum.” Explain why this can be used…

A: Every element has a unique line spectrum. This is because the energy absorbed by the electron is…

Q: Explain the important distinctions between eachpair of terms:(a) cathode rays and X-rays(b) protons…

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

Q: The element silver has both physical and chemical properties, some of which do not change when the…

A: When the size of sample changes , all the properties changes except the density of sample. Density…

Q: Using white and black circles to represent different kinds of atoms, make a drawing that accurately…

A: Given samples of matter,         A solid element, a liquid compound, and a heterogeneous mixture.

Q: Which arrangement of elements did Mendeleev find produced a repeating pattern of properties?

A: According to Mendeleev Periodic law, the periodic properties of the elements are repeated after…

Q: Which of the following statements is correct? A. All metals are shiny and can conduct electricity.…

A: Which of the following statement is correct ?  A. All metals are shiny and can conduct electricity.…

Q: What are the 50 elements and their symbols?

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: How are the concepts of an atom and an element related? What causes elements to differ?

A: A particular atom will have the same number of protons and electrons and most atoms have at least as…

Q: 7. Is matter usually charge-neutral? How would matter be different if it were not charge-neutral?

A: Matter is neutral since they have equal number of protons(positively charged) and electrons…

Q: Differentiate between different isotopes of an element?

A: A number of atoms of some elements have been identified, which have the same atomic number but…

Q: 4. If you were given an antique piece of jewelry and you were told that it was made of solid gold,…

A: There are several tests that are used to detect the purity of gold used by jewelry manufacturers…

Q: All the chemical elements may be derived from which single element?

A: All the chemical elements may be derived from one single element. That has to be given below.

Q: MEASUREMENT AND MATTER Organization of the Periodic Table Read each description in the first column…

A: A semimetal can be defined as an  element whose properties are intermediate between those of metals…

Q: Use triangles to represent atoms of element A and circles to represent atoms of element B. Draw an…

A:

Q: In five or more sentences, describe the properties of nonmetals.

A:

Q: What are the 8 families of elements?

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Write the symbol for element and classify it as a metal, nonmetal, or metalloid.tin

A: The elements which lie on the left side or middle of the periodic table are classified as metals.…

Q: What is a proton ? what is a chemical?

A: A proton is a subatomic particle which is present in the nucleus of an atom along with the neutrons.…

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: An example of an element is chicken noodle soup powerade air inside a balloon lead pipe baking soda…

A: An element is a pure form of substance in which all atoms have same number of proton so here we see…

Q: What are the "A" group numbers for Aluminum, Calcium, and Cesium, respectively?

A: In chemistry, a group refers to a column of elements in periodic table. In total there are 18 groups…

Q: Which elements are most likely to have properties that are similar to the properties of F?

A: Br and Cl have the similar properties like Fluorine. Because F is the member of 17 group in the…

Q: Enter the symbols for the ions of sodium and phosphorus .

A: Sodium is an element which lies in group IA.  Sodium has a charge of +1.  Losing of one electron…

Q: A 0.383 g sample of an element contains 1.943 × 10 21  atoms. What is the element symbol

A: Given, amount of sample =0.383 gnumber of atoms of the sample =1.943×1021 atomswe are asked to…

Q: Which of the following elements would have chemical properties similar to Ca   K, Ba, Kr, or Sc

A: Elements from same group have same chemical properties

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: A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’…

A: The required reaction is as follows:

Q: Whith of the following is not one of Dalton's laws? a) Atoms are indestructible. b) Atoms of the…

A: Dalton's atomic theory are as follows  (1) Atoms are indivisible,tiny particle of same size and same…

Q: When the elements are arranged in order of increasing mass, certain sets of properties recur…

A: In Dmitri Mendeleev and Lothar Meyer periodic table, the elements are arranged in order of…

Q: In ions why not separated by mass only and  why not separated by charge only?

A: Mass spectrometer works in four stages which is ionisation, acceleration, Deflection and detection.…

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: . In the following figures, the open circles represent atoms of an element and the filled circles…

A: Dalton’s Atomic Theory: Dalton's Atomic Theory is based on law of conservation of mass and the law…

Q: Which of the following statements is the best description of a fundamental difference between the…

A: The main difference between the atomic models of Thomson and Rutherford is that Thomson model of…

Q: Where do I find the charge of the elements in the periodic table?

A:

Q: what are 2 incompatible elements? are calcium and chlorine incompatible?

A: Rubidium, Barium, Uranium, and Lanthanum are incompatible elements.

Q: What did Mendeleyev do with his Table of the Elements that surprised people?

A: In the given question  Mendeleev arranged the elements that elements with the same physical and…

Q: What is correct from multiple choice

A: Since the symbol of Hydrogen is H and not He Hence option b is correct answer

Q: the element manganese (Mm

A:

Q: element 'X' is

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: The elements of group 4A show an interesting change in properties moving down the group. Give the…

A: The name and chemical symbol of each element in the group 4A is to be given and label it as a…

Q: Which of the following elements would you expect to have similar properties? As Te Ar Sn He

A: The element present in the same group of the periodic table has the same chemical properties. The…

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: 12C and 14C area. atoms of different elements.b. isotopes.c. atoms with different atomic numbers.d.…

A: Given substances are : 12C and 14C  Options are : a. atoms of different elements.b. isotopes.c.…

Q: represent the same element?

A: we know,In atom the number of protons and electrons are equal but different neutrons is possible.so…

Q: Give the names and chemical symbols for the three isotopes of hydrogen.

A: The name and chemical symbols for the three isotopes of hydrogen has to be given,

Q: Which element is represented by the following symbol A. Chromium B. germanium C. barium D. iron

A: The given symbol of element is                       5624X  Here,  Mass number of element = 56…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.