Atomic Structure and Bonding
To share electrons creates this kind of bond
Covalent
An atom has these three subatomic particles (100 points each)
electrons, protons, neutrons
Discovered the neutron
Chadwick
80% of the periodic table is this
Metals
These elements are metals and are good conductors of electricity (Group 1)
Alkali metals.
The atomic number of Argon is?
18
These two subatomic particles are roughly the same size
protons and neutrons
Aristotle
Percentage of the periodic table that are nonmetals
15%
While the first day of Fall was Sept 22nd, at what time (MDT) was it officially Fall?
A) 6:43 am
B) 8:43 am
C) 12:19 pm
D) 3:43 pm
12:19 pm
Nitrogen can bond with another nitrogen atom through this type of covalent bond
triple covalent
Elements in the periodic table are arranged according to increasing ___________
Atomic number
Who created the plum pudding model
JJ Thomson
Only 5% of the periodic table is made of these elements
Metalloids
Dmitri's ORIGINAL periodic table had how many elements?
A) 15
B) 28
C) 63
D) 110
63
Other than Helium, how many electrons are in the outer most electron orbital of every Noble Gas?
8
Outer electrons of an atom are referred to as _____ electrons
Valence
Famous Gold Foil experiment, discovered atoms were mostly empty space
Rutherford
An element that is ductile and malleable is most likely a ?
Metal
Family of salt-formers (Chlorine, Fluorine, etc)
halogens
In the compound H2O, the electrons in the bonds are unequally shared between oxygen and hydrogen, forming this type of bond
polar
The atomic mass of an element is equal to
Protons + Neutrons
His thoughts led to the concept of conservation of mass
John Dalton
Example: Semiconductors
Metalloids
How many radioactive elements are their are the periodic table?
A) 19
B) 38
C) 9
D) 2
38