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The elements in Groups 1 and 2 are known respectively as
Chadwick
groups
About 56
by increasing atomic mass
valence electrons
Alkali metals, Alkali Earth Metals
more protons
making observations
Who discovered the neutron?
Chadwick
groups
About 56
by increasing atomic mass
valence electrons
Alkali metals, Alkali Earth Metals
more protons
making observations
Iron has 3 isotopes. 5.84% is Fe-54, 91.68% is Fe-56 and .31% is Fe-58. Without any calculations what is the approximate atomic mass of iron?
Chadwick
groups
About 56
by increasing atomic mass
valence electrons
Alkali metals, Alkali Earth Metals
more protons
making observations
Magnesium is located to the right of sodium because Magnesium has
Chadwick
groups
About 56
by increasing atomic mass
valence electrons
Alkali metals, Alkali Earth Metals
more protons
making observations
Atoms of elements that are in the same group have the same number of
Chadwick
groups
About 56
by increasing atomic mass
valence electrons
Alkali metals, Alkali Earth Metals
more protons
making observations
How was Mendeleev's periodic table arranged?
Chadwick
groups
About 56
by increasing atomic mass
valence electrons
Alkali metals, Alkali Earth Metals
more protons
making observations
The vertical columns in the periodic table are known as...
Chadwick
groups
About 56
by increasing atomic mass
valence electrons
Alkali metals, Alkali Earth Metals
more protons
making observations
From the choices below which step would occur first?
Chadwick
groups
About 56
by increasing atomic mass
valence electrons
Alkali metals, Alkali Earth Metals
more protons
making observations
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