Radioactivity and Nuclear Decay
How are nuclear fusion and fission similar?
They both result in the formation of one or more new elements.
What property is the same for each atom of an element?
What is atomic number?
How many electrons are in the first energy level of a Bohr model?
2
What side of the periodic table are metals found?
left side
What part of an atom is involved in chemical reactions?
Electrons
When an atomic nuclei emits an alpha particle, what happens to the atomic number of the atom?
decreases by 2
What is an isotope?
Same elements, different mass
How many electrons are in the second energy level of a Bohr model?
8
Which of the following elements has the greatest electronegativity Ca, Mg, Al, N?
N
Which IMF is the strongest?
Hydrogen bonding
An alpha particle has the same structure as what element?
Helium
42He
How many electrons would a chlorine ion have Cl-?
18 electrons
What element has an electron configuration of [Ne]3s2?
Magnesium
An element with 7 valence electrons can be found where on the periodic table?
group 17 (halogens)
tetrahedral
Complete the following reaction
21183Bi--> ? + 42He
20781Tl
What is the atomic mass of the following ion?
3617Cl-
36
What is the electron configuration of sodium (Na)?
1s22s22p63s1
Put the following in order from lowest frequency to highest frequency:
x-rays, yellow light, gamma rays, microwaves
microwaves, yellow light, x-rays, gamma rays
What is the chemical formula for aluminum sulfide?
Al2S3
Complete the following reaction
14054Xe --> ? + 0-1e
14055Cs
The average atomic mass of Nitrogen is 14.01. Which isotope is the most abundant: N-12, N-14, or N-15?
N-14
What element has an electron configuration of 1s22s22p63s23p64s23d1?
Scadium
In an ionic bond, which atom loses electrons and which atom gains electrons?
Metal loses electrons
Non-Metal gains electrons
Draw the correct electron dot formula for carbon dioxide.
See board.