Atomic Structure (1)
How many protons are there for iodine?
53
Where are the electrons located?
In the shells
Is O2 an atom or molecule?
molecule
What is the family name for group 17?
Halogens
Maximum number of electrons you can fit in the 1st shell?
2
If an atom gains 2 electrons, what is the ion charge?
2-
What is the charge of the nucleus?
Positive, because it contains protons (+) and neutrons (no charge)
Is CO2 a compound, mixture, or element?
compound
Which element in group 1 has the biggest atomic radius?
Francium
What is an ion?
Atom loses or gains electrons
How do you figure out the number of neutrons?
mass number - atomic number
What is the mass number of an element with 10 protons, 8 electrons, and 12 neutrons?
protons + neutrons = 22
What is the symbol for silver?
Ag
Which family is the most reactive?
Alkali metals
An atom loses an electron. Is this a cation or anion?
cation
How many electrons for Cr6+?
24-6=18
What is the number of valence electrons for Na?
1
Is F2 + NaCl a compound, mixture, or element?
mixture
Which has a higher ionization energy: B or N?
N
What is the Bohr Model for a Mg atom?
Mg, p=12, n=12) 2) 8) 2)
What is a valence shell?
the outermost shell
What is the number of valence electrons for Ca2+?
8
What atom has 50 electrons?
Tin
Why are Noble Gases unreactive?
They have a full valence shell
What is the Bohr Model for a P ion?
[P, p=15, n=16 2) 8) 8)] 3-