The basic character of the hydrides of 15 group elements decreases in the order:
NH3>PH3>AsH3>SbH3
SbH3>AsH3>PH3>NH
NH3>AsH3>PH3>SbH3
NH3>SbH3>PH3>AsH3
SbH3>PH3>AsH3>NH3
The Correct Option is A
Solution and Explanation
Group 15 hydrides basicity trend:
- Basicity decreases down the group
- NH3 > PH3 > AsH3 > SbH3
- Reason: Decreasing electronegativity difference with H down the group
- Lone pair availability decreases with increasing atomic size
Thus, the correct option is (A): NH3 > PH3 > AsH3 > SbH3.
Top Questions on p -Block Elements
- $\textbf{Choose the correct statements about the hydrides of group 15 elements.}$
A. The stability of the hydrides decreases in the order \(\text{NH}_3 > \text{PH}_3 > \text{AsH}_3 > \text{SbH}_3 > \text{BiH}_3\)
B. The reducing ability of the hydrides increases in the order \(\text{NH}_3 < \text{PH}_3 < \text{AsH}_3 < \text{SbH}_3 < \text{BiH}_3\)
C. Among the hydrides, \(\text{NH}_3\) is a strong reducing agent while \(\text{BiH}_3\) is a mild reducing agent.
D. The basicity of the hydrides increases in the order \(\text{NH}_3 < \text{PH}_3 < \text{AsH}_3 < \text{SbH}_3 < \text{BiH}_3\)
Choose the most appropriate from the option given below:- JEE Main - 2024
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\[ \begin{array}{ccc} \text{ClO}_4^- & \text{IO}_4^- & \text{BrO}_4^- \\ E^\circ = 1.19 \, \text{V} & E^\circ = 1.65 \, \text{V} & E^\circ = 1.74 \, \text{V} \\ \end{array} \]
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(A) Non metals have higher electronegativity than metals.
(B) Non metals have lower ionisation enthalpy than metals.
(C) Compounds formed between highly reactive nonmetals and highly reactive metals are generally ionic.
(D) The non-metal oxides are generally basic in nature.
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The number of oxygen atoms present in chemical formula of fuming sulphuric acid is _______.
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\[ 2A + B \rightarrow 2C + D \]
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Concepts Used:
Group 15 Elements
Group 15 elements are also known as nitrogen group elements or nitrogen family.
It consists of:
- Nitrogen (N)
- Phosphorus (P)
- Arsenic (As)
- Antimony (Sb)
- Bismuth (Bi)
- Moscovium (Mc)
They are present on the right side of the periodic table. All the elements are arranged based on their atomic weight. The elements with similar properties reside in a column called the group.
All Group 15 elements have the electron configuration ns2np3 in their outer shell, where n is the principal quantum number.
Periodic Trends in Group 15 Elements
