Ions
Atomic Structure and Isotopes
Atomic Structure
Isotopes
Random
100
___ are positively charged ions.
Cations
100
Mass Number=
Protons + Neutrons
100
The atom is made up of 3 subatomic particles called
Protons, neutrons, and electrons
100
Isotopes are atoms of the same element that have different
a. numbers of protons. b. number of neutrons. c. numbers of electrons.
What is B. different number of neutrons?
100
The percent abundance of all of the isotopes of an atom should add to _______.
100%
200
____ are negatively charged ions.
Anions
200
A changing proton number results in
a new element?
200
Which element is shown and what is it's charge?
Oxygen, neutral
200
Chlorine has a mass number 35. How many protons, neutrons, and electrons does it have?
What is 17 protons, 17 electrons, 18 neutrons?
200
What is the difference between K-39 and K-40
K-39 has 20 neutrons, K-40 has 21 neutrons
300
What is the charge of an atom with 24 protons, 24 neutrons, and 26 electrons?
What is -2?
300
What on the periodic table equals the number of protons in an atom's nucleus?
Atomic Number
300
Draw a carbon atom with a -4 charge.
I'll walk around and check
300
Write Calcium-40 in this isotope notation M AE?
What is 4020 Ca?
300
Draw a Sodium atom with a +3 charge.
Protons: 11
Neutrons: 12
Electrons: 8
400
If a nitrogen atom has a charge of -3, how many electrons must it have?
10
400
In the isotope notation Silicon-28, the number 28 represents the
Atomic mass number
400
The space between the nucleus and the outer boundary of an atom is filled with mostly_______.
Empty space
400
If Bromine has three isotopes, Br-78, Br-80, Br-81, which would have the highest relative abundance?
Br-80
400
How many electrons can fit on the third energy level?
18
500
What will happen to an atoms charge as it loses electrons?
It will become more positive
500
Isotopes have the same number of ______ but different number of _________.
Protons, neutrons
500
Draw the isotope Boron-13.
Should have:
Protons: 5
Electrons: 5
Neutrons: 8
500
Calculate the average atomic mass of boron given that 19.8% of its naturally occurring atoms have a mass of 10.013 amu and 80.2% have a mass of 11.009 amu.
10.812
500
Calculate the atomic mass of lead. The four lead isotopes have atomic masses and relative abundances of 203.973 amu (1.4%), 205.974 amu (24.1%), 206.976 amu (22.1%) and 207.977 amu (52.4%).
207.2 amu