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Fall Final: 02. Atomic Structure & the Periodic Table ⚛ Flashcards | StudBud
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Fall Final: 02. Atomic Structure & the Periodic Table ⚛
Fall Final: 02. Atomic Structure & the Periodic Table ⚛
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1
An ion of tin has 46 electrons. What is the symbol for this ion? (Tin is element #50)
Sn4-
Sn
46Sn
Sn4+
2
In the Bohr model of a P atom, there are __ e- in the 1st shell, __ e- in the 2nd shell, and __ e- in the 3rd shell.
1, 2, 3
2, 8, 8
8, 7, 0
2, 8, 5
3
For N to become N
3-
, it needs to...
gain electrons
lose electrons
gain protons
lose protons
4
Which subatomic particles are involved when determining the charge of an ion?
neutrons and electrons
protons and electrons
protons, neutrons, and electrons
protons and neutrons
5
An ion has 10 electrons and a charge of -3. How many neutrons does this ion have?
7
10
13
More information is needed
6
The isotope Cl-36 has __ protons and __ neutrons.
36; 36
36; 35.45
17; 19
17; 35
7
An ion of copper has 28 electrons. What is its charge?
+2
-2
+1
-1
8
Which subatomic particle(s) have almost no mass?
electrons only
protons only
neutrons only
electrons AND neutrons
9
An ion has the isotope symbol
56
Mn
4+
. What is the mass number?
25
56
54.94
31
10
An ion with 5 protons, 6 neutrons, and a charge of 3+ has an atomic number of...
11
6
5
8
11
An ion has the isotope symbol
56
Mn
4+
. What is the number of electrons?
4
25
21
29
12
Which subatomic particle(s) is/are in the nucleus?
neutrons only
protons AND neutrons
protons only
electrons only
13
How many dots are on the Lewis Dot Structure of a phosphorus (#15) atom?
30
3
5
15
14
Most of an atom’s mass is from ____________.
the electrons only.
the nucleus only.
the protons only.
the neutrons only.
15
Isotopes have different numbers of
electrons
all of the above
neutrons
protons
16
What do the dots represent in a Lewis Dot Structure?
protons
neutrons
core electrons
valence electrons
17
An atom has 3 protons and 3 neutrons. An isotope of this atom could have...
4 protons and 3 neutrons
5 protons and 1 neutron
2 protons and 4 neutrons
3 protons and 4 neutrons
18
Isotopes have different
charges
mass numbers
average atomic masses
atomic numbers
19
How can you tell the number of valence electrons an atom has?
the mass number
the group number (the number next to the letter A)
the period number
the group number (the number next to the letter B)
20
An ion has 10 electrons and a charge of -3. How many protons does this ion have?
7
10
13
More information is needed
21
Isotopes have the same number of
protons
all of the above
electrons
neutrons
22
[H] What is an anion?
An atom that has lost electrons
A positive ion
Two of the above
A negative ion
23
Which subatomic particle is NOT included in the mass number?
electrons AND neutrons
protons only
neutrons only
electrons only
24
A species has 20 protons and 18 electrons. The symbol for this is...
Ar2-
Ca2-
Ar2+
Ca2+
25
Electrons have a ___ mass than protons and a ___ charge.
smaller; negative
smaller; positive
larger; negative
larger; positive
26
How many dots are on the Lewis Dot Structure of a gallium (#31) atom?
3
31
1
13
27
An ion has the isotope symbol
56
Mn
4+
. How many neutrons are in the isotope?
25
56
54.94
31
28
A sodium atom and a sodium ion must have the same number of...
protons
valence electrons
neutrons
electrons
29
If an isotope's symbol is Cl-36, the "36" represents the number of...
protons AND neutrons
electrons
protons
neutrons
30
[H] An ion with 10 electrons and a charge of +3 has the same number of electrons as a ___ atom.
aluminum
nitrogen
lithium
neon
31
Which subatomic particle(s) has/have no charge?
neutrons AND electrons
protons only
neutrons only
electrons only
32
Which subatomic particle determines the identity of an element?
electrons only
protons AND neutrons
protons only
neutrons only
33
Most of an atom’s volume is made up of _________________.
neutrons only
electrons only
empty space
protons only
34
Isotopes always have the same
atomic number
charge
mass number
nuclear mass
