Y P BLOCK > Group 15 > Flashcards

Group 15 Flashcards

(53 cards)

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1
Q

P block includes group __ to group ___

A

13 to 18

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2
Q

Valance shell configuration

A

ns² np¹-⁶

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3
Q

Nitrogen found in plants and animals as

A

Proteins

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4
Q

Nitrogen occurs as _______ and ______ called as ___petre and ___ petre respectively

A

Sodium nitrate and potassium nitrate
Chile and Indian

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5
Q

What is the chemical formula for sodium nitrate?

A

NaNO3

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6
Q

What percentage of the atmosphere is comprised of molecular nitrogen?

A

78%

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7
Q

Which elements are typical metals in Group 15?

A

Bismuth and moscovium

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8
Q

What type of elements are Nitrogen phosphorus, arsenic, and antimony?

A

Non-metals and metalloids

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9
Q

What character shift occurs as you go down

A

From non-metallic to metallic through metalloidic character

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10
Q

Fill in the blank: Molecular nitrogen comprises _______ of the atmosphere.

A

78%

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11
Q

What is the chemical formula of the apatite family?
Flouroapatite formula

A

Ca9(PO4)⁶.CaX², where X = F, Cl, or OH

Ca9(PO⁴)⁶ .CaF²

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12
Q

Why is phosphorus considered essential?

A

It is an essential constituent of animal and plant matter, present in bones and living cells.

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13
Q

Where are phosphoproteins commonly found?

A

In milk and eggs.

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14
Q

What minerals are arsenic, antimony, and bismuth mainly found as?

A

Sulphide minerals.

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15
Q

True or False: Moscovium has a long half-life and is abundantly available.

A

False.

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16
Q

What is the chemical formula of the apatite family?

A

Ca5(PO4)3X, where X = F, Cl, or OH

Examples include fluorapatite (Ca5(PO4)3F), which are the main components of phosphate rocks.

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17
Q

What type of elements are found in Group 15?

A

Non-metal, metalloid ,metals

Group 15 contains both non-metals (like nitrogen) and metalloids (like arsenic).

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18
Q

How does metallic character change in Group 15?

A

Metallic character increases

This trend is observed as you move down the group from nitrogen to bismuth.

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19
Q

atomic radius from smallest to largest: N, P, As, Sb, Bi

A

N < P < As < Sb < Bi

Atomic radius increases down the group.

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20
Q

What is the order of electronegativity (E.N) in Group 15 elements?

A

N > P > As > Sb > Bi

Nitrogen has the highest electronegativity, while bismuth has the lowest.

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21
Q

IE of group 15

A

N > P > As > Sb > Bi

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22
Q

What is the boiling point trend in Group 15?

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A

N > P < As< Bi< Sb

Boiling points increase down the group.

23
Q

What is the melting point trend in Group 15?

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A

N < P < As > Sb > Bi

N< P<Bi< Sb<As

Melting points increase Upto As then decrease upto bismuth

24
Q

Which element in Group 15 has a tendency to form -3 oxidation states?

Study These Flashcards
A

N > P > As > Sb > Bi

This trend indicates the preference for gaining three electrons.

25
tendency of -3 Ox state decreases down the group due to
Increase in size and metallic character or INERT PAIR EFFECT
26
which element hardly form any compound with -3
Bismuth
27
Which element in Group 15 has a tendency to form +5 oxidation states?
N > P > As > Sb > Bi | due to inert pair effect ## Footnote Nitrogen is the most likely to form +5 oxidation states.
28
Tendency to form +3 ox state
N+³
29
Besides +5 ox state N exhibit
+1,+2,+4 when it reacts with O2
30
N doesnt not form +5 ox state with_____
Halogens as N dont have D orbitals
31
Phosphorous also shows
+1 & +4 state in some oxoacids
32
For N all Ox state from +1 +4 tend to_______
disproprtionate in acid solution
33
In P all intermediate ox state dispropionate into +5 & +3 in
Alkali and acid
34
+3 ox state in As,Sb,Bi become
increasingly stable
35
N restricted to max covalency of
4 ( one s & three p) available
36
Heavier elements have vaccant d for P
PF6-
37
What is the anomalous behavior of nitrogen attributed to?
Small size, high ionization energy, high electronegativity, absence of d-orbital ## Footnote These factors contribute to nitrogen's unique chemical properties.
38
N exhibit unique ablity to form
P multiple bonds | with itself and high electronegativity(C,O)
39
Bond dissociation enthalpy order of hydrides
NH3 > PH3 >AsH3 > SbH3 > BiH3
40
Bascity of hyrdride
NH₃ > PH₃ > AsH₃ > SbH₃ > BiH₃
41
Which hydride is the most stable among NH₃, PH₃, AsH₃, SbH₃, and BiH₃?
NH₃ > PH₃ > AsH₃ > SbH₃ > BiH₃ ## Footnote Stability decreases down the group.
42
The reducing character of the hydrides follows the trend ______.
NH₃ < PH₃ < AsH₃ < SbH₃ < BiH₃ ## Footnote This indicates that ammonia is the least reducing while bismuth hydride is the most.
43
MP of hydrides
NH3 > SbH3 > AsH3 > PH3
44
BP of hydrides
BiH3 > sbH3 > NH3 > AsH3 > PH3
45
Which element in Group 15 has a tendency to form -3 oxidation states?
N > P > As > Sb > Bi ## Footnote This trend indicates the preference for gaining three electrons.
46
Which element in Group 15 has a tendency to form +5 oxidation states?
N > P > As > Sb > Bi ## Footnote Nitrogen is the most likely to form +5 oxidation states.
47
Which hydride is the most stable among NH₃, PH₃, AsH₃, SbH₃, and BiH₃?
NH₃ > PH₃ > AsH₃ > SbH₃ > BiH₃ ## Footnote Stability decreases down the group.
48
The reducing character of the hydrides follows the trend ______.
NH₃ < PH₃ < AsH₃ < SbH₃ < BiH₃ ## Footnote This indicates that ammonia is the least reducing while bismuth hydride is the most.
49
Reactivity towards oxygen Oxides
E + O₂ → E₂O₃ E + O₂ → E₂O5
50
What is the reactivity trend of Group 15 elements with oxygen?
## Footnote This reaction demonstrates the formation of oxides with oxygen.
51
Which is the mild reducing agent
NH³
52
Ammonia is strong reducing agent
False Mild BiH³ is strong reducing agent
53
Why does NH₃ have higher melting and boiling points than PH³
because nitrogen is highly electronegative and small in size NH₃ has strong hydrogen bonding between in its solid and liquid form PH₃ does not form strong hydrogen bonds since phosphorus is less electronegative
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