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Atomic and periodic Table
Atomic and periodic Table
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Physical Science, Chapter 4 Atomic structure and 5 Periodic Table.
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1
Find the element in group 17, period 3. What is the symbol of the element?
Cl
Sb
Al
Xe
2
Going down the periodic table, the metallic nature?
It decrease then increases.
increase then decreases.
increases.
remains constant.
3
To what category of elements does an element belong if it is a poor conductor of electricity?
transition elements
metals
nonmetals
metalloids
4
The order of elements in the periodic table is based on
the electric charge of the nucleus.
the number of neutrons in the nucleus.
atomic mass.
the number of protons in the nucleus.
5
The charge of an atom is
positive.
negative.
neutral.
unbalanced.
6
Oxygen’s atomic number is 8. This means that an oxygen atom has
eight protons in its nucleus
a total of eight neutrons and electrons.
eight neutrons in its nucleus.
a total of eight protons and neutrons.
7
A subatomic particle that has a negative charge is called a(n
molecule.
electron.
compound.
element.
8
Each energy level of an atom has a maximum number of ____ it can hold.
quarks
protons
electrons
neutrons
9
What is an atom’s nucleus made of?
only neutrons
protons and neutrons
anodes
only protons
10
Atoms that are neutral have no charge because they
have an equal number of electrons and protons.
have an equal number of neutrons and protons.
have neutrons in their nuclei.
have an equal number of charged and noncharged particles.
11
A particle that moves around outside the nucleus is a(n) ____.
electron
neutron
proton
quark
12
What is the charge of a cation?
a positive charge
no charge
a negative charge
The charge depends on the size of the nucleus.
13
Dot diagrams are used to represent ____
atomic mass
outer level electrons
atomic numbers
isotopes
14
Atoms of the same element with different numbers of neutrons are called ____.
isotopes
metalloids
radioactive elements
metals
15
Most elements on the periodic table are
semiconductors.
nonmetals.
metalloids.
metals.
16
The metals in Groups 1A, 2A, and 3A ____.
gain electrons when they form ions
lose electrons when they form ions
all have ions with a 1 charge
all form ions with a negative charge
17
Which statement is true about oxygen-17 and oxygen-18?
The have the same mass number.
Their atoms have an identical mass.
They do not have the same number of protons.
They are isotopes of oxygen.
18
Carbon and other nonmetals are found in which area of the periodic table?
on the right side
in the middle column of the periodic table
on the left-most side
in the bottom rows
19
To find the number of neutrons in an atom, you would subtract
atomic number from electron number.
isotope number from atomic number.
mass number from atomic number.
atomic number from mass number.
20
How does atomic radius change from top to bottom in a group in the periodic table?
It tends to decrease.
It first increases, then decreases.
It tends to increase.
It first decreases, then increases.
21
A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ____.
56
30
52
26
22
A member of the nitrogen family has valence electrons..
none.
four.
three.
five.
23
Two different isotopes of an element have different
numbers of electrons.
numbers of neutrons.
atomic numbers.
numbers of protons.
24
Which has the largest atomic radius from left to right across a period in the periodic table?
carbon
Boron
neon
lithium
25
What is the element with the lowest electronegativity value?
helium
helium
cesium
fluorine
