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: An element having an atomic number of 79 and ion charge of -1; determine the identity of the element…

A:

Q: A blanket of air, made up of gases, liquids, and some solid matter, is called the

A: Atmosphere is the blanket of air around the earth which is beneficial for human being. Gases…

Q: 4. What are the main ideas in the nuclear theory of the atom?

A: The main ideas of nuclear theory of an atom has to be given. The atomic model of Rutherford is also…

Q: Dr. Robert Pappas teaches that in essential oil chemistry, 99.9% of the time we are only concerned…

A: 1. Essential oils are complex mixture of plant compounds. 2. They are volatile 3. They are…

Q: The graph at the right shows the atomic radius for the19 elements in the periodic table.(a) Describe…

A: a.The edge of an atom's orbital determines its size. Orbital boundaries, on the other hand, are…

Q: 14. What are the properties of metals? Where are metals found on the periodic table?

A: To explain: the properties of metals?  Where are metals found on the periodic table?

Q: Be sure to answer all parts. Identify the highlighted element in the periodic table and give its:…

A: We have to have the basic idea of periodic table to answer those questions. We know right side of…

Q: Which of the following compounds has the higher melting point? (ignore difference in strength of…

A: The melting point of hydrocarbons depend on number of carbon atoms and branching.  If the number of…

Q: How did DeBroglie’s idea of matter waves rationalize the Bohr model of the atom? A.  It showed…

A: DeBroglie's idea of matter waves, also known as wave-particle duality, proposes that all matter…

Q: Which elements would you expect to lose electrons inchemical changes?(a) potassium(b) sulfur(c)…

A: The element will lose or gain electrons in order to get noble gas configuration or fully filled…

Q: What is the electronic configuration of N³? Oa. 15² 25² 2p6 Ob. 1s 2s 2p 3s¹ Oc. 15²225²2p³

A: The symbol "N3-" represents a nitrogen ion with a 3- charge. To determine its electronic…

Q: do that (link)) 6. Draw a picture for column 2 and 3 and insert the image into the table: (if you…

A: To show the how electron transferred first write the electronic configuration of the elements and…

Q: Which of the following pairs of elements would you expect to have the most similar atomic radii? O…

A: Trend followed : Atomic radii decreases across the period from left to right and increases down the…

Q: For the following problem show your work for credit above your answer. Also, for credit, your math…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: 2. An element that has 9 orbitals 5 fully filled, 2 single electrons and 1 empty orbital (a) What is…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Four main-group elements a, b, c and d are highlighted in the outline of the Periodic Table below: a…

A: Given:element: a,b,c and dDetermine the order of decreasing atomic radius.Distance between the…

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: 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: SECTION 3: Communication 5. The development of the modern atomic theory was initiated by John Dalton…

A: Modal of Atom  by- i-Joseph J. Thomson  ii-Ernest Rutherford  iii-Neils Bohr's We need to Briefly…

Q: As you move right across a period of elements, the number of valence electrons… a. Increases b.…

A: In the periodic table, the number of periods of an element depends on the number of shells in which…

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: Atomic Radius decreases as you move left to right even though there are additional protons ,neutrons…

A: Atomic radius decreases as you move left to right even though there are additional protons, neutrons…

Q: 26. All of the following are true regarding metals except: metals commonly lose electrons to become…

A: Metals have very low ionization enthalpy compared to non-metal. So they easily can lose electron to…

Q: what would be substitted for the carboncs since a element has to be out there

A:

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.…

A:

Q: 46. Given below is the electronic configuration of an element. What is the atomic number of the…

A:

Q: 1) The analysis that quantifies analytes called . ...... 2) The most abundant element in the…

A: 1) The analysis that quantifies analysts called Quantitative analysis.

Q: what is X-Ray ? what is use of it?

A: X-ray is an electromagnetic radiation having wavelength between 0.01 to 10 nm. They are produced…

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: Match each element to its period. Drag the appropriate elements to their respective bins. • View…

A: Since, you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: give some similarities that exist among the elements of the group 1

A: Group 1 in periodic table consists of following elements H Li Na K Rb Cs Fr

Q: Niels Bohr's model of the atom described the: A. position of electrons in relation to the nucleus .…

A: Bohr model of Hydrogen atom: Negatively charged electron orbit the positively charged nucleus in…

Q: Four main-group elements a, b, c and d are highlighted in the outline of the Periodic Table below: d…

A: Atomic radius: The distance between the nucleus and the outermost electron is known as the atomic…

Q: For the following 4 scientist, match the scientist to the statement that best fits that particular…

A: Answer:- This question is answered by using the simple concept of structure of atom and the…

Q: Read each description in the first column of the table below. If any chemical element with atomic…

A: Answer:Periodic table is an arrangement of elements in rows and columns according to their…

Q: Calcium, Sulphur and selenium. Which elements can gain electrons and how many. And which ones can…

A: Calcium has 2 valence electrons and is a metal. Hence, it will give up 2 electrons.

Q: What element is located in group 1A but is not an alkali metal?

A: The elements that are present in group 1A are called as alkali metals because their hydroxides form…

Q: 4. How many electrons does sulfur have in the 3p orbital? a. 4 b. 5 C. 6 5. Which of the following…

A: Note: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: According to Heisenberg, Pauli, and other like-minded scientists, what are the basic building blocks…

A: 1) According to Heisenberg, Pauli and  other like -minded scientists, atoms are the building blocks…

Q: The following is an electron configuration for one of the elements on the periodic table:…

A:

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