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Questão 1
Questão
Which element belongs in Group I?
Responda
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Sodium
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Oxygen
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Iodine
Questão 2
Questão
The Periodic Table arranges elements in order of increasing...
Responda
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Mass Number
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Reactivity
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Atomic Number
Questão 3
Questão
The Noble Gases are unreactive because they have full outer shells.
Responda
- True
- False
Questão 4
Questão
Groups arrange elements according to the number of energy levels.
Responda
- True
- False
Questão 5
Questão
Why are group I elements called 'alkali metals'?
Responda
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Because they have pH numbers of 7.
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Because they react wth water to produce a metal hydroxide.
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Because they become increasingly reactive and violent as you go down the group.
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