Nonmetals Answers

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Which element has a complete valence electron shell?

A
selenium (Se)
B
oxygen (O)
C
fluorine (F)
D
argon (Ar)
2
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Eriq, a chemist, is running tests with four unknown elements. He has found that they all bond the same way, so he knows that they are in the same group on the periodic table of elements. The table shows other properties that Eriq observed.

Question illustration
A
15.
B
16.
C
17.
D
18.
3

Which describes any compound that has at least one element from group 17?

A
halide
B
noble gas
C
metalloid
D
transition metal
4

A student is working with four different solid substances: sodium (Na), calcium (Ca), copper (Cu), and iodine (I). Which substance is most likely to break easily into many smaller pieces?

A
sodium
B
calcium
C
copper
D
iodine
5

What property do all of the group 18 elements have that makes them stand out from other elements?

A
They are the only nonmetals that are liquid at room temperature.
B
They are the only nonmetals that are solid at room temperature.
C
They are very likely to bond with any element, whether it is metallic or not.
D
They are very unlikely to bond with any element, whether it is metallic or not.
6

Krypton is named after the Greek word that means “secret.” Which explains why krypton was most likely given this name?

A
Krypton is a halogen, so it is a secret element because it is always part of a compound and is difficult to find by itself.
B
Krypton is a halogen, so it should be kept secret because it is so reactive and toxic.
C
Krypton is a noble gas, so it was difficult for chemists to find it, as though it was a secret.
D
Krypton is a noble gas, so it secretly bonds with every type of element without showing it.
7

On the periodic table, the elements known as noble gases are all found in

A
period 2.
B
period 6.
C
group 15.
D
group 18.
8

Of these nonmetals, which one is likely to be the least reactive?

A
oxygen (O)
B
sulfur (S)
C
chlorine (Cl)
D
fluorine (F)
9

Which describes any substance that shatters or breaks easily?

A
malleable
B
brittle
C
volatile
D
ductile
10

Which compound forms a powerful acid and also contains a halogen?

A
H2S
B
HBr
C
Li2O
D
LiBr

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