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Atomic Structure and Periodic Table Flashcards | StudBud
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Atomic Structure and Periodic Table
Atomic Structure and Periodic Table
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1
What is the name of the isotope that has 8 n, 7 p, 7 e?
N-14
N-15
O-15
N-7
2
The area of a atom that contains nearly all of the mass of an atom is called the
energy levels
cloud
nuclear membrane
nucleus
3
Which element is more reactive?
sodium
cesium
lithium
francium
4
What is the charge of a neutron?
neutral
-1
+2
+1
5
How many subatomic particles does a neutral atom of sulfur have?
16 n, 17, p, 17 e
16 n, 18 p, 18 e
16 n, 16 p, 18 e
16 n, 16 p, 16 e
6
Different isotopes indicate that an element will have different numbers of ___________.
electrons
atoms
neutrons
protons
7
How many valence electrons does bromine have?
5
3
7
1
8
What is the name of the isotope that has 18 n, 16 p, and 16 e?
Si-34
S-34
S-32
Si-34
9
Fluorine (F) is a _______.
metal
gas
liquid
solid
10
The number of neutrons for an atom is
equal to protons plus electrons
equal to the atomic mass minus the atomic number
atomic number
equal to the protons
11
How many valence electrons does silicon (Si) have?
4
2
1
14
12
What is the oxidation number of oxygen (O)?
3+
+/-4
2-
2+
13
When referring to the element phosphorus on the periodic table, the number 15 is the
atomic mass
atomic number
number of neutrons
atomic weight
14
What is the oxidation number of oxygen (O)?
+/- 4
3+
2-
2+
15
Silicon (Si) is a ______.
metalloid
nonmetal
metal
liquid
16
One property of an electron is
. that they have a charge of -1
that they have a charge of +1
that they are located in the nucleus
that they have a mass of 1 AMU
17
Which of the following gives an atom's mass number?
neutrons plus protons plus electrons
number of protons
neutrons plus protons
number of neutrons
18
What is the oxidation number of nitrogen?
3-
1+
3+
1-
19
Mercury (Hg) is a ______.
liquid
gas
nonmetal
solid
20
Sulfur (S) is a ______.
metal
gas
metalloid
nonmetal
