A neutral atom of chlorine-37 has protons, neutrons, and electrons. Silicon and lead are an example of two elements that belong to the same Select one: class. gender. group. period. Which set below includes only alkali metal elements? gallium, germanium, iron, barium, tellurium lithium, sodium, potassium, rubidium, francium magnesium, gallium, flluorine, mercury, neptunium radium, polonium, actinium, platinum, selenium

A neutral atom of chlorine-37 has protons, neutrons, and electrons. Silicon and lead are an example of two elements that belong to the same Select one: class. gender. group. period. Which set below includes only alkali metal elements? gallium, germanium, iron, barium, tellurium lithium, sodium, potassium, rubidium, francium magnesium, gallium, flluorine, mercury, neptunium radium, polonium, actinium, platinum, selenium

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The following exam is fill in the blank. Please insert your answer into the spreadsheet at the end of this exam for grading. All matter is made of The proton number of an element is always equal to the number of. neutral atom. that are found in a If sodium loses an electron, it will have a charge of When atoms lose or gain electrons, we call them an called a 4 An atom with a negative charge is called aſn) ap atom with a positive charge is An atom that has the same number of protons but a different number of neutrons is called a True or false. Is an ionic bond held together by sharing an electron pain True or fals There is an uneven distribution of electrons between carbon and hydrogen when they bond. True or faise. Oxygen pulls Hydrogen's electron towards itself because it has a higher electronegativity., A bond between two atoms of the same kind will always be 12 A triple bond will involve the sharing of electrons. A molecyle of water can make up to. 13 hydrogen bonds with neighboring…
a. Most of the elements are solids at room temperature. Choose the example(s) of elements that are liquids near room temperature. (Select all that apply.) boron selenium gallium bromine Ozirconium Oberyllium b. Most of the elements are solids at room temperature. Choose the example(s) of elements that are gases at room temperature. (Select all that apply.) xenon fluorine Ohydrogen Onitrogen Omercury Oboron
Chlorine-35 is one isotope of chlorine. (35 is the mass number.) Chlorine-37 is another isotope of chlorine. How many protons and how many neutrons are in each isotope of chlorine?
14. This exercise will lead you to verify that the average atomic mass of magnesium is 24.31 amu, based on the following information: isotope mass (amu) percent abundance 24Mg 23.985042 78.99% 25Mg 24.985837 10.00% 26Mg 25.982593 11.01% The average atomic mass is the weighted average of the atomic masses of all isotopes. What is the fractional abundance of 24Mg?
1- For each of the following atoms, calculate the number of protons and neutrons in the nucleus and the number of electrons outside the nucleus (assume neutral atoms). element number of number of number of electrons mass number (A) symbol 126C protons (Z) neutrons 12 10 12 10 14 27 10 23,1Na 11 17 18 2- Calculate the atomic mass to four significant figures for carbon, given the following data: Isotope Exact Atomic Mass (amu) 12.00000 13.00335 Abundance in Nature (%) 98.89 1.110 12C 13C
1.)What is the atomic number for the element that is in group 1A and period 6? 2.) What is the atomic number for the element that is in group 2A and period 5? 3.)What is the atomic number for the element that is in group 4A and period 3? 4.) What is the atomic number for the element that is in group 3B and period 4?
Describe the structure of atoms, including 1. the masses, electrical charges, and locations of protons, neutrons and electrons. Type your answer here 2. How could you identify an element by its number of protons?
Click in the answer box to activate the palette. Write the isotope symbol that fits the description, using a superscript for the mass number and a subscript for the atomic number. An element with 7 electrons and a mass number of 13:
Mendeleev left empty spaces in his periodic table for elements he suspected existed but had yet to be discovered. He left no spaces for the Noble gases that we now have in the modern periodic table. Give at least two reasons on why this group was challenging to discover, based on what we now know about the atom including sub-atomic particles. Mendeleev had a group VIII but they are NOT the noble gases.
Periodic table The periodic table lists two main numbers for each element. The atomic number is an integer that equals the number of protons. The number of neutrons is not given in the periodic table because it will vary with different isotopes. The mass number of an element is the sum of the protons and neutrons. To find the number of neutrons, the atomic number must be subtracted from the mass number. Elemental symbol When writing the symbol for an element, a superscript indicates the mass number and a subscript indicates the atomic number. For example, Chas a mass number of 14 and an atomic number of 6. This isotope can also be written as just ¹4C. You do not need to put in the 6 because the atomic number of carbon is always 6 regardless of which isotope you are dealing with. Part B . . Part A VE ΑΣΦ How many neutrons are found in one atom of 59 Co? Express your answer numerically. View Available Hint(s) A certain element X has four isotopes. number Elemental symbol When writing the…
1.) An ion has a mass number of 65, 36 neutrons, and a charge of +1 . Identify the element symbol, and determine the number of protons and electrons in this ion.element symbol:number of protons:number of electrons: 2.) An atom or ion has 43 neutrons , 36 protons, and 36 electrons. Identify the element symbol, and determine the mass number and charge for this atom or ion.element symbol:mass number:charge: 3.) Give the systematic name of each covalent compound. Spelling counts.SF2:
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