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Periodic Table of Elements Flashcards | StudBud
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Periodic Table of Elements
Periodic Table of Elements
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#periodictable
Flashcards
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Questions
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Answers
1
Define the average atomic mass
the weight of the element
number of electrons
number of protons and electrons
weighted average of mass & frequency of isotopes
2
What's the electronic configuration of Nitrogen?
1s2 2s2 2p3
1s2 2s2 2p6
3
All the atoms of an element have the same atomic number
False
True
4
Helium and Hydrogen are the most abundant elements in the Universe.
True
False
5
"s" orbitals are spherical and can hold up to...
6 electrons
4 electrons
2 electrons
10 electrons
6
Identify the element with atomic number 20.
Neon
Calcium
7
To determine the electronic configuration of elements in "d" block use "Period minus 1"
True
False
8
Elements in the same..........have similar characteristics.
Period
Group or Family
9
Is Chlorine a metal, a metalloid or a nonmetal?
Metalloid
Metal
Nonmetal
10
The atomic number of Oxygen is 8. How many electrons does the neutral atom have?
2
4
16
8
11
The superscript in electron configurations indicates the number of electrons in that orbital.
True
False
12
Hund's rule: every orbital is occupied by 1 electron before any orbital is filled with 2 e-.
False
True
13
Lanthanides and Actinides belong to the "f" block. Use "Period minus 2".
True
False
14
Metals are malleable, shiny, ductile
True
False
15
Atoms of the same element may have different number of neutrons, they are called...
electrons
neutrons
isotopes
protons
