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☆☆☆☆☆Cards in this guide (10)
Do neutrons have an electric charge
Neutrons have a neutral charge
Neutrons have no charge.
Hydrogen lithium and sodium all have one valence electron Which element has the smallest atomic radius
hydrogen
Which elements belong to the group of noble gases
Noble gases are: helium, neon, argon, krypton, xenon, radon, ununoctium.
What are horizontal rows of elements in the periodic table
The horizontal rows of elements in the periodic table are called periods.
What are three characteristics of noble gases
Noble gases are all monatomic (single-atom molecules) and have the following characteristics under normal conditions :
- Odorless
- Colorless
- Low reactivity (due to a full outer electron shell)
Atoms with a low electronegativity like calcium might bond with
an atom with a high electronegativity, like fluorine
The discovery of a periodic table closest to its modern form was the result of which scientist's work with decks of cards
Mendeleev
How many more valence electrons does magnesium need to have a full outer valence shell
it needs six more electrons to have a full outer valence shell.
Was the first element on the periodic table of elements carbon
Hydrogen is the first element in the periodic table.
If a chlorine atom were to attract an electron from sodium the chlorine atom would become blank charged
negative
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