Element Labels
Lewis Dot Diagram
Element Trivia
Valence Electrons
Periodic Table
100
How many protons does Fluorine have?
9
100
How would you draw a Lewis Dot Diagram for the element Thallium (Tl)?
. . Tl .
100
What is an Element?
An element is a species which cannot be chemically broken down into simpler species.
100
How many Valence Electrons are in the element Beryllium?
2 valence electrons
100
What is a period?
The horizontal groupings on a Periodic Table
200
What is the Atomic Symbol of Oxygen?
O
200
What do the dots on a Lewis Dot Diagram represent?
An elements amount of Valence Electrons
200
What is an isotope?
An Isotope is an atom with the same number of protons and a different number of neutrons.
200
There are 4 valence electrons in the following elements:
Carbon, Silicon, Germanium, Tin, and Lead
200
What are families?
The vertical groupings on a Periodic Table
300
What is the Atomic Mass of Ytterbium?
73.054 amu
300
How do you show bonding between two atoms?
You can show bonding by drawing a Lewis Dot Structure
300
How many atoms of potassium does the element K_2 CO_3
2
300
How do you figure out how many valence electrons an element has?
You look at the period number of an element. You completely disregard period's 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 though.
300
What is Osmium's number of neutrons?
114
400
How many electrons does Hydrogen have?
1
400
What does a Lewis dot structure show between two atoms?
It shows covalent bonding
400
What is the total number of atoms in the compound Pb(NO_3)2
9
400
How many valence electrons does Radon have?
8 valence electrons
400
Where are the non metals located on the periodic table?
Towards the right side of the periodic table including Hydrogen and Helium
500
What is the formula for trying to find the amount of neutrons in an atom?
#of neutrons= Mass# - Atomic #
500
If an element gives away a valence electron what does it become? If an element gains a valence electron, what does it become?
If they give a valence electron away they become a positive ion If an element gives away a valence electron are they a positive or a negative ion
500
How many Hydrogen atoms are in the compound 2(NH_4 )2 Cr_2 O_7
16
500
What do Oxygen, Sulfur, and Selenium all have in common?
They all have 6 valence electrons
500
What is the Atomic Mass, Atomic Number, and Mass Number of the element Iridium?
Atomic Mass: 192.22 Atomic Number: 77 Mass Number: 192
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