Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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Water contains small amounts of the element fluorine, which helps to strengthen tooth enamel and prevent cavities. What would you expect to happen to the fluorine element when it is added to drinking water?
a. Fluorine would lose an electron and would be found as HF.
b. Fluorine would gain a proton, becoming a radioactive isotope.
c. Fluorine would gain an electron and would be found as F- or HF.
d.Fluorine would form a covalent bond with water.
Complete the following statements:
a. The atomic number gives the number of _______ in the nucleus.
b. In an atom, the number of electrons is equal to the number of _______.
c. Sodium and potassium are examples of elements called _______.
Write the atomic symbol for each of the following
a. an atom with 47 protons and mass number of 107
b. an atom with 74 protons and 110 neutrons
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- An atom that has lost three electrons will have a charge of .arrow_forwardScientists J. J. Thomson and William Thomson (Lord Kelvin) made numerous contributions to our understanding of the atom’s structure. Which subatomic particle did J. J. Thomson discover, and what did this lead him to postulate about the nature of the atom? William Thomson postulated what became known as the “plum pudding” model of the atom’s structure. What did this model suggest?arrow_forwardYour friend tells you about an article that he read in a tabloid that reported the discovery of a new form of carbon containing eight protons in the nucleus of its atoms. He claims that scientists are eager to explore the properties of this new form of carbon. What is wrong with the tabloid's claim? a. Nothing. The claim is believable. b. The claim must be false because an atom with eight protons would be oxygen, which is already known. c. The claim must be false because all forms of carbon are already known.arrow_forward
- Copper (Cu) has an atomic number of 29 and a mass number of 64. One copper atom, therefore, has how many protons? a.27 b.29 c.31 d.35arrow_forwardAccording to Rutherfords model of the atom, how many electrons would be found in each of the following atoms? a. sodium, which has 11 protons in its nucleus b. calcium, which has 20 protons in its nucleusarrow_forwardHow many platinum atoms are in a pure platinum ring weighing 4.32 g?arrow_forward
- Calculating Atomic Mass Magnesium has three naturally occurring isotopes with masses 23.99,24.99,and25.98amu and natural abundances 78.99,10.00,and11.01%. Calculate the atomic mass of magnesium.arrow_forwardAn isolated atom has a net charge of ________ .arrow_forwardWhich of tire following explain how an ion is formed'? Explain your answer. a. adding or subtracting protons to/from an atom b. adding or subtracting neutrons to/from an atom c. adding or subtracting electrons to/from an atomarrow_forward
- A atom becomes an ion that possesses a negative charge. The atom must have: a.gained protons. b.lost protons. c.lost electrons. d.gained electrons.arrow_forward5. Fill in the following table (the first line is competed as an example) Ion Number of Protons Number of Electrons Electrons Lost/Gained Na+ 11p 10e 1e lost A. B. 10e 3 gained Mg2+ C. D. E. F. 9p G. 1e gained H. 3p 2e I.arrow_forwardA. For the isotope chlorine-37: a. How many protons are in chlorine-37? b. How many neutrons are in chlorine-37? c. How many electrons are in chlorine-37? d. Is chlorine-37 a metal or a nonmetal? e. What is the charge of the most probable ion formed from chlorine-37? f. What are the numbers of the row and group that locate chlorine in the periodic table? g. Is chlorine a representative element or a transition element? 2. A natural sample of chromium, taken from the ground, will contain four isotopes: Cr-50, Cr-52, Cr-53, and Cr-54. Predict which isotope is in greatest abundance. Explain your reasoning. 3. For the element sulfur, provide the following information: a. Atomic number b. Elemental symbol c. Average atomic mass d. Number of protons in one atom e. Number of electrons in one atom f. The most probable charge of an ion formed from sulfur g. Number of electrons in the ion referred to in part (f) han 4. Create a concept map that illustrates the relationship between electronic…arrow_forward
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