Choose the most correct answer-Nobel gases

have all the properies of the other answers combined

The period of an atom is equal to the

number of energy levels it has in the electron cloud

The mass number of an atom is equal to

the number of protons and neutrons added together

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Periodic table

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A quiz to consolidate understanding of the periodic table

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Questions 15

Answers

1
The atomic number of an atom is
the number of electrons
the number of neutrons
the same as the mass number
the number of protons
2
Where are the alkali metals located on the periodic table?
Far left
Far right
in the middle - gp 3 onwards
Group 17 (7A)
3
Choose the most correct answer-Nobel gases
have full outer energy levels
have all the properies of the other answers combined
are non-reactive
are found in gp 18 (8A)
4
Electrons have a
charge card
positive charge
negative charge
no charge
5
The group that an atom is in is equal to the number of
valency electrons it has
electrons in total
the number of energy levels it has in the electron cloud
protons
6
Sodium has a mass number of 23. It has an atomic number of 11. How many neutrons??
12
11
10
13
7
The period of an atom is equal to the
number of protons and neutrons
number of energy levels it has in the electron cloud
number of valency electrons it has.
number of electrons it has in the electron cloud
8
Periods on the periodic table run
vertically down the table
diagonally across the table
horizontally across the table
in a zig-zag up and down the table
9
Which of the following lists contains only non-metals
Al, Si, P
S, C, O
Cu, Au, Zn
B, C, K
10
Where are the halogens located on the periodic table?
far left
between gps 3-13 (3A)
they are all in group 17 (7A)
far right
11
Groups on the periodic table...
run diagonally across the table
run in a zig-zag down the table
run horizontally across the table
run vertically down the table
12
Which of the following lists contains only metals?
Li, Na, He
Ne, Ar, Kr
O, C, B
Co, Mn, Mg
13
The element found in group 2, period 3 is...
Calcium
Beryllium
Magnesium
Helium
14
The mass number of an atom is equal to
the number of neutrons only
the number of protons and electrons added together
the number of protons and neutrons added together
the number of electrons and neutrons added together
15
The element found in group 15 (5A), period 3 is
Magnesium
Arsnic
phosphorus
nitrogen

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