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28 Cards in this Set
- Front
- Back
What is ionization energy?
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the minimum amount of energy required to remove an electron from the ground state |
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Why is the second ionization energy higher than the first?
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The second ionization energy of Mg is larger than the first because it always takes more energy to remove an electron from a positively charged ion than from a neutral atom. |
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Why do noble gasses not have listed ionization energies?
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Because they have stable, filled shell configurations
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On the periodic table, what is the difference between a group and a period?
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periods=horizontal groups=up and down |
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Identify:the alkali metalsAlkali earth metalsTransition metalsHalogensInner transition metalsNoble gasses
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alkali metal=group 1 alkali earth=group 2 halogens=17 transition metals=d block inner transition=elements 51-71 and 89-103 noble gases=group 18 |
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How can you tell the difference between Covalent, ionic, and metallic bonds?
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Covalent bonding occurs when atoms/molecules share pairs of electrons.
Ionic bonding occurs when transfer of electrons takes place Metallic bonding is bonding that occurs in metals. |
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How do ions form?
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when atoms lose or gain electrons.
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how to find the charge of an ion |
Subtract the number of electrons from the number of protons in an atom as a basic way of calculating the charge of the ion. For example, if a sodium atom loses one electron, subtract 10 from 11, which equals 1. A sodium ion has a +1 charge, which is notated as Na+.
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how to tell the difference between a cation or a anion |
get later |
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what is the octet rule? |
atoms of main-group elements combine in a way where each atom has eight electrons in its valence shell
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How many valence electrons does a helium atom have?
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2 |
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What is the charge on the strontium ion?
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2+ |
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How many electrons does silver have to give up in order to achieve a noble-gas electron configuration?
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1 |
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How many electrons does barium have to give up to achieve a noble-gas electron configuration?
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2 |
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Which of the following elements does NOT form an ion with a charge of 1?
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fluorine |
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What is the formula of the ion formed when tin achieves a stable electron configuration?
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sn4+ |
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What is the formula of the ion formed when cadmium achieves a noble-gas electron configuration?
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cd2+ |
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Which of the following occurs in an ionic bond?
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oppositely charged ions attract |
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What is the name of the ionic compound formed from lithium and bromine?
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lithium bromide |
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Which of the following is NOT a characteristic of most ionic compounds?
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they have low melting points |
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What type of ions have names ending in -ide?
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only anions |
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When Group 2 elements form ions, they
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loose 2 electrons |
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Which of the following is NOT a cation?
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sulfate |
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Which of the following compounds contains the Mn3+ ion?
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mn203 |
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Which of the following is true about the composition of ionic compounds?
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They are composed of anions and cations.
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Which set of chemical name and chemical formula for the same compound is correct?
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potassium chloride, KCl
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Why are metals good conductors of electricity?
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The free electrons in metalscan move through the metal, allowing metals to conductelectricity.
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Why are most ionic compounds brittle?
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because the electrons are tightly held by the ions,
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