Nuclear Chemistry
What is the atomic number of an alpha particle?
2
Magnesium is in of which periodic group?
Alkaline earth metals
What is the definition of "Ionization Energy"?
Amount of energy to remove an electron
Which atom has a mass number of 19 and an atomic number of 9.
Fluorine
A neutral element that ends its electron configuration with 3p4 ?
Sulfur
When an element undergoes beta decay, it's mass changes by:__________
Zero (0)
Which element is in period 4 and is an alkali metal?
Potassium (K)
Which atom in group 2 has the smallest atomic radius?
Be (Beryllium)
How many electrons are in an atom of S2- ?
18 electrons
What is an example of quantitative data?
Any example using numbers. Measurements
If carbon-15 has a half life of 15 seconds, how much of the sample remains after 30 seconds? (in percent)
25% of the original sample (2 half lives)
Which group on the periodic table is the least reactive?
Noble gases (group 18)
As you move from left to right on the periodic table, Electronegativity _________
Increases
An element with 7 valence electrons will form an ionic charge of:_____
1-
Write an ion that has the same number of electrons as Argon
S2- Cl1- K1+ Ca2+
What is the daughter particle after a particle of Uranium - 235 undergoes alpha
U-235 ==> He-4 + Th-231
Where are the metalloid elements located on the periodic table?
surrounding the "stairs"
Going from the bottom to the top of a periodic table group, atomic radius will:________
decrease
Sulfur has an average atomic mass of ______
32.06 amu
What color emission represents a very large release of energy and therefore has a very small wavelength?
Blue, violet