Alkali Metals and Alkaline Earth Metals (Grade 10)
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Alkali Metals and Alkaline Earth Metals
1.
How many valence electrons are contained in an atom of Rb?
- 2
- 1
- 37
- 86
2.
How many valence electrons are contained in an atom of Ca?
- 2
- 1
- 20
- 40
3.
Which of the following elements would react with chlorine to form a compound with the general formula XCl?
- Ca
- Mg
- Al
- Fr
4.
Which of the following could be the atomic number for an element that reacts with oxygen to form a compound with the general formula XO?
- 11
- 21
- 56
- 19
5.
How many atoms of sodium would be needed to react with one atom of oxygen to form a stable ionic compound?
- 1
- 2
- 3
- 4
6.
Which of the following is NOT a property of alkali metals?
- Alkali metals are extremely reactive with water.
- Alkali metals are lustrous.
- Alkali metals form ions with a charge of +2.
- Alkali metals have a low ionization energy.
7.
Which of the following properties correctly describes an alkaline earth metal?
- It does not react with air.
- It reacts violently with water.
- It is found in nature as an atom.
- It has a high electronegativity value.
8.
Which of the following distinguishes an alkaline earth metal from an alkali metal?
- The atomic number
- The mass number
- The number of protons
- The number of valence electrons
9.
Both alkaline earth metals and alkali metals tend to electrons to form an ion with a charge.
10.
Name one property that results from magnesium having 2 valence electrons.
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