Chemistry

Chemistry, 24.07.2019 09:30, AutismRobotrix1999

Which of the following elements has two (2) valence electrons? a. na b. mg c. al d. s

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Chemistry, 27.06.2019 22:30, Cocco

How is the number of valence electrons related to the ionization energy of an element? (1 point) low ionization energy correlates to elements with fewer valence electrons. elements with higher ionization energy tend to have less valence electrons. atoms with nearly full valence electron shells have lower ionization energy. high ionization energy indicates a low likelihood to gain valence electrons.

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Physics, 02.11.2019 03:31, lil8174

Which of the following statements about valence electrons and the periodic table is true? a) the number of valence electrons decreases from left to right across each period. b) the number of valence electrons increases from top to bottom within each group. c) all of the elements in group 9 have nine valence electrons. d) elements with the most valence electrons are in group 18.

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Biology, 12.11.2019 01:31, Blaise2653

Plz 1. this is the highly reactive family of elements with 7 valence electrons.? 2. this is a group of elements with few valence electrons that conducts heat and electricity.? 3. this is a type of element that has many valence electrons, not a conductor.? 4. these are the group 3 or d-block elements. these dense metals with high boiling points can have different oxidation states and all are solid at room temperature with the exception of mercury.? 5.is is an element with full valence shell, very unreactive.

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Chemistry, 12.11.2019 07:31, ella3714

1which elements had complete outer shells? give the name and symbol for each 2. what do you notice about the location of the elements in #1? 3. which elements had only one valence electron? 4. what do you notice about the localion of the elements in #3? 5. what do you notice about the number of valence electrons as you move from left to right across a row or period in the periodic table? (na - mg - al si p s - ci - an 6. what do you notice about the number of energy levels or shells as you move down a group or column in the periodic table? (h li - na) 7. elements are organized into families according to their physical and chemical properties. identify the elements that you used in step 5 that belong to each family based on the number of valence electrons. give the name and symbol for each element, alkali metals - 1 valence electron alkaline earth metals - 2 valence electrons boron family - 3 valence electrons carbon family 4 valence electrons nitrogen family - 5 valence electrons oxygen family - 6 valence electrons halides - 7 valence electrons noble gases - complete outermost shell 8. what do you notice about the location of the elements in each family? 9. how would you classily hydrogen? why? 10. predict the number of valence electrons for each element based on its location in the periodic table of elements. you will need to use the table in your textbook barium load xenon potassium t trimpe 2002

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