nonmetals
replace each question with a full sentence answer the
question
1. what are the group numbers?
2. list four characteristics of all nonmetals.
3. what two states of matter do nonmetals exist in at room
temperature?
4. the nonmetals have no ____________ and do not
____________.
5. e. what are the oxidation numbers of the nonmetals?

Question

Accepted Answer

### 1.
# Brief Explanations:
Nonmetals are found in group numbers 14, 15, 16, 17, and 18 of the periodic table.
# Answer:
Nonmetals are found in group numbers 14, 15, 16, 17, and 18 of the periodic table.

### 2.
# Brief Explanations:
Four characteristics of all nonmetals are: they are generally poor conductors of heat and electricity, they are brittle in the solid state, they have relatively low melting and boiling points (compared to many metals), and they tend to gain or share electrons in chemical reactions.
# Answer:
Four characteristics of all nonmetals are that they are generally poor conductors of heat and electricity, they are brittle in the solid state, they have relatively low melting and boiling points (compared to many metals), and they tend to gain or share electrons in chemical reactions.

### 3.
# Brief Explanations:
Nonmetals exist as solids and gases at room temperature (for example, carbon is a solid nonmetal and oxygen is a gaseous nonmetal; there are no liquid nonmetals at room temperature under standard conditions).
# Answer:
Nonmetals exist as solids and gases at room temperature.

### 4.
# Brief Explanations:
The nonmetals have no luster (metallic luster) and do not conduct heat and electricity well (or do not conduct electricity, depending on the context; also, they don't have the malleability or ductility of metals). A common fill - in is "The nonmetals have no luster and do not conduct electricity (or conduct heat)".
# Answer:
The nonmetals have no luster and do not conduct electricity (or conduct heat).

### 5.
# Brief Explanations:
The oxidation numbers of nonmetals can vary widely. For nonmetals in compounds, they often have negative oxidation numbers (such as - 1 for chlorine in HCl, - 2 for oxygen in H₂O) but can also have positive oxidation numbers in some compounds (like + 4 for carbon in CO₂, + 5 for nitrogen in HNO₃). In their elemental form, the oxidation number of a nonmetal is 0.
# Answer:
In their elemental form, nonmetals have an oxidation number of 0, and in compounds, nonmetals often have negative oxidation numbers (e.g., - 1 for Cl in HCl, - 2 for O in H₂O) but can also have positive oxidation numbers (e.g., + 4 for C in CO₂, + 5 for N in HNO₃).

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