The Periodic Table lists all the known elements. Elements are arranged in order of ....... 1 ....... number. The melting points of Group I elements ....... 2 ....... down the group. The melting points of Group VII elements ....... 3 ....... down the group. Which words correctly complete gaps 1, 2 and 3?

Q: Complete the following by choosing the correct word. The atomic theory was given by H' and H have…

A: Atomic theory was given by Dalton. Both have different mass number so they are isotopes.

Q: Rutherford’s gold foil experiment consisted of firing positively charged alpha particles at a thin…

A: Rutherford alpha particle experiment. He observed that when alpha particles are passed through the…

Q: Isotopes become most stable around... the 1st elements on the periodic table. the 27th element on…

A: The amount of energy required to separate all the nucleons present in the nucleus is known as…

Q: The speed of sound is 113 m/s.. and the frequency is 987 Hz, then is the wave length per unit cm

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Q: In honor of the late Alex Trebek, your Chemistry class holds a Jeopardy tournament. The Final…

A: Since you have posted more than one question, we are doing first for you. To do the rest repost the…

Q: A particular atom has the symbol: 25Ne2- This atom has: protons - ? neurons - ?  electrons- ?…

A: The symbol is given as, 25Ne2- First of all, this is not an atom. This is an ion, an anion.  The…

Q: Write the shorthand electronic configurations for the following elements.

A: Modern periodic table contains  7 periods , 18 groups    To write the electronic configuration…

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: The element with atomic number 38, strontium (Sr), can be found in what period of the periodic…

A: The periodic table is a tabular display of chemical elements arranged according to their atomic…

Q: 3. Which of the following is one of the primary reasons for the acceptance of quantum atomic theory?…

A: Introduction Quantum atomic theory is the scientific theory that describes the behavior of atoms and…

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Q: Which scientist first discovered electrons? a. Bohr b. Chadwick c. Dalton d. Democritus e.…

A: Here, we have to write the name of the scientist who discovered electrons.

Q: you change the number of each subatomic particle neutrons✔ f protons of electrons Choose... Jay…

A: Atom is smallest particle which can not be further divided in to any other particle. Element is a…

Q: Protons and neutrons have Mass .......... .... wwwww less O equal O high O Other O specific metal…

A: Atomic weight = 180gm/mole Density =16.6 gm/cm^3 ->it is BCC structure.

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: Match the following correctly.

A: Answers: 1. Cesium is a IA group element, and we know they are alkali metals.  So cesium (Cs) is…

Q: top

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

Q: Q3. What volume of 8 M sulfuric acid must be used to prepare 1.5 Lof a 0.10 M H,So, solution? A.…

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Q: OTE THIS: NO NEED TO EXPLAIN EACH PROBLEM. JUST PROVIDE A CORRECT ANSWER BASED ON THE DIRECTION.

A: Since you have posted multiple subparts, we can answer only first three subparts. To get the…

Q: in text form with proper workings and explanation for each and every part and steps with concept and…

A: Part 2:Explanation:Step 1: Decode the letters:- Start by identifying the elements represented by the…

Q: A is a subatomic particle that is electrically neutral. * electron neutron O shell O protron

A: The atom consists of three sub-atomic particles, that are discussed as follows;

Q: Direction: Identify in what specific group each given element belongs to, by completing the table…

A: The given table has to be filled with group , type of metal and the block of the element.

Q: In the simulation, what was the maximum number of electrons that could be put on the orbit farthest…

A: 18 electron  The M shell can be put 18 electron as we move to higher atomic number

Q: The magnitude of the electric force between two particles depends on which factors? O A. Mass and…

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Q: The isotope of an unknown element, X_ has a mass number of 77. The most stable ion of this isotope…

A: Number of protons = atomic number  Number of protons = number of electrons (in neutral atom)…

Q: .What is the difference between the number of electrons in an atom of selenium, Se, and the number…

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Q: Graphite and Diamonds Graphite is the material in a pencil tip. Diamonds are precious jewels. They…

A: Allotrope: The existence of a chemical element intwo or more forms, which may differ in the…

Q: Select the choice that is not an example of energy. O a. a beam of light O b. a loud noise O c. an…

A: Energy is the capacity of doing or performing work . Energy manifests in many forms like potential…

Q: Applications of nuclear chemistry

A: Given:Nuclear ChemistryWrite applications of nuclear chemistryNuclear chemistry is a branch of…

Q: Give a short description of the following, your answer must be in a sentence form. 1. Protons- 2. JJ…

A: 1- Protons - The protons are located at the centre of the and is positively charged and no of…

Q: Right short hand (condensed) electron configuration‘s for the following elements. A.) N B.) K C.) Ge…

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Q: gro periodic lable WUuI snonnɔuLƏUn element :X: be found Alkali metals .A O .B O Halogens .C O…

A: Given element have 7 electrons in their valence shell

Q: Problem 3 What is the maximum occupancy of principle shell n = 20? Enter your answer in the boxes…

A: The electrons in an atom are present in the various atomic orbital of an atom and are labeled as…

Q: Complete the following table for the element Xenon (Xe): Atomic Weight Atomic # # of protons # of…

A: Xenon a chemical element present in the periodic table which is heavy gas and called as noble gas.…

Q: How many neutrons are in the isotope Gold-197?" O 79 O 197 O 196.97 118

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 11. What was Rutherford's contribution to the atomic model? A. Electrons are not bound to the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Fill in the Blanks a. 1s² 2s²2p6 3s²3p6 4s²3d¹04p4 b. 1s² 2s²2p6 3s²3p6 4s² 3d¹04p5 c. 1s² 2s²2p…

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Q: 4. Complete the following table:" Element Physical Color Physical Metal/nonmetal/ Boiling Pt./…

A: Out of the given elements, Na, Mg, Zn, Sn and Fe are metals whereas S and Br are non- metals. Metals…

Q: Hydrogenic ions have. . Select one: O a. same number of protons as hydrogen O b. same number of…

A: Hydrogen is an element having atomic number 1. The atomic symbol for hydrogen is 1.

Q: B. The explosive metal in period 3, group

A: It is classified into 7 rows and 18 column s rows are called periods and coloumns are called as…

Q: Description of atom Evidence supporting model or explained by the model Picture of atom DALTON'S…

A:

Q: Put the correct option in the correct plank. 1. Dalton 2. isotopes 3. shells 4. electron 5.…

A: Atomic theory was given by Dalton.

Q: Identify the highlighted element in the periodic table and give its [1] element name and symbol; 12]…

A: The position of the element given in the periodic table is as shown below.

Q: The mass of a single palladium atom is 1.77x10-22 grams. How many palladium atoms would there be in…

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Q: Completely the followin

A: Modern periodic table is divided into 7 periods and 18 groups  Based on differenciating electron…

Q: 1. According to modern atomic theory, what is the specific location of a neutron within an atom? a.…

A: Given: Sub-atomic particle is neutron.

Q: Review | Constants | Periodic Table Select the correct electron-dot formulas. You can refer to the…

A: Lewis symbol or electron-dot formula Lewis symbol or electron-dot formula diagram is constructed by…