Flashcards
Atomic Structure--Chemistry
Flashcards do conjunto (32)
- 1What are elements made up of?The SAME # of protons and electrons
- 2What can elements NOT do?Broken down by chemical and physical processes
- 3What do atoms consist of?small atomic particles
- 4Where is the nucleus and what is it's j-o-bbb!It is the central part of the atom consisting of two types on nucleons, those are protons and neutrons.
- 5Where do the electrons reside?orbiting around the outside
- 6What are the charges of protons neutrons, and electrons?protons= +1
Neutrons= 0
electrons= -1 - 7What is the relative mass of protons neutrons, and electrons?protons =1 amu
neutrons= 1 amu
electrons= 1/2000 of an amu - 8Why do atoms always have the same # of proton and electrons?Because they have an equal but opposite charge, which means the overall charge is zero
- 9What does the # of protons in the nucleus symbolise?the mass number
- 10What does the # of protons and neutrons put together equal to?the atomic number
- 11Why does the mass # sometimes vary?Because the amount of neutrons can change based on the element
- 12What are isotopes?Atoms with the same # of protons but with a different # of neutrons
(same atomic but different mass) - 13What is another characteristic of an isotope?chemical properties are the same
physical properties are different - 14The electrons in an atom are randomly arranged or fixed?Fixed
- 15How do electrons travel around the nucleus?in shells
- 16How to do you represent the electron order?Orbital electron configuration
- 17Why do elements in the same group react the same?They have the same # of electrons in their outer shell
- 18Name the most important groups on the periodic tableGroup 1 (alkali metals) , 2 (alkaline earth metals), 7 (the Halogens), 8 (group 0 aka The Inert gases)
- 193s2 means what?It has 3 shells and it has 2 electrons in the valence shell
- 203s2 means what?It lives in shell number 3 AND that shell holds can only hold 2 electrons
- 21Fill in the blanks: Shells are used for _______ Orbitals describe __________1. showing the energy levels where electrons live
2. the shape and size of the electron cloud where the electron can be found - 22Name the 4 different types of orbitals and how may electrons it can holds(2)
p(6)
d(10)
f (14) - 23T OR F-----Shells can hold more than one orbital and the same type.FALSE, Shells can hold more than one orbital and NEVER THE SAME TYPE.
- 24How many quantum numbers does an individual electron have?4
- 25What does N stand for?The principle number (orbital energy and size)
Allowed vals: 1-7 - 26What does L stand for?Azimuthal/ orbital quantum number. (shape and energy multi-electron atom) Signified by the letter names for sub-shell (s.p.d.f)
Allowed values: 0,1,2,3 - 27What does ml stand for?Magnetic quantum numbers: orbital orientation
Allowed vals: whatever -L - +L is - 28What does ms stand for?Electron spin quantum #'s
Allowed vals: -1/2 or +1/2 - 29How are orbitals filled?from low to high energy
- 30What does the number in front of the orbital mean?The shell that the electron lives in
- 31What does the letter of the orbital mean?What shape it is
- 32How do you write the abbreviated electron configuration?Go back to the previous inert gas and write the rest
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- FlashCards sobre Atomic Structure--Chemistry, criado por dominique22 em 08-02-2014.
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- dominique22
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