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प्रश्न
Explain the trend in the following atomic properties of group 16 elements:
Electron gain enthalpy
उत्तर
Electron gain enthalpy becomes less negative down the group.
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संबंधित प्रश्न
Draw the structures of the following molecules: XeF4
Account for the following:
Helium is used in diving apparatus.
Draw the structures of the following molecules: XeF2
What happens when: XeF4 reacts with SbF5?
Which noble gas has the lowest boiling point?
Which noble gas is used in filling balloons for meteorological observations?
Write the structures of the following molecules: XeOF4
Complete the following equations : XeF4 + O2F2→
Complete the following equation:
XeF2 + H2O →
Why has it been difficult to study the chemistry of radon?
What inspired N. Bartlett for carrying out reaction between Xe and PtF6?
How are xenon fluorides XeF2, XeF4 and XeF6 obtained?
Which one of the following does not exist?
(i) XeOF4
(ii) NeF2
(iii) XeF2
(iv) XeF6
Give the formula and describe the structure of a noble gas species which is isostructural with
`ICI_4^(-)`
Give the formula and describe the structure of a noble gas species which is isostructural with:
`IBr_2^(-)`
Give the formula and describe the structure of a noble gas species which is isostructural with:
`BrO_3^(-)`
Answer the following.
List the uses of Neon and argon gases.
Complete the following reactions : XeF6 + 3H2O →
Draw the structures of the following
XeF6
Write the electronic configuration of the following element:
Krypton (Z = 36)
Fill in the blanks by choosing the appropriate word/words from the brackets
(square pyramidal, electrical, 74; 26, sp3d2, sp3d, chemical, 68, 32, tetrahedral, yellow, white, iodoform, Lucas)
The geometry of XeOF4 molecule is ______ and the hybridisation of Xenon atom in the molecule is ________.
Draw the structure of XeF4.
Sulfur dioxide reacts with sodium hydroxide solution to form _______.
Which of the following fluorides does not exist?
Helium is preferred to be used in balloons instead of hydrogen because it is ____________.
In which of the following pairs, the two species are isostructural:
Which of the following reactions is an example of redox reaction?
On partial hydrolysis, XeF6 gives ______.
The atomic radii of Zr and Hf are almost identical. This is because of
The order of increasing sizes of atomic radii among the elements O, S, Se and As is:
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
Match List - I with List - II:
| List - I | List - II | ||
| (Species) | (Number of lone pairs of electrons on the central atom) |
||
| (A) | XeF2 | (i) | 0 |
| (B) | XeO2F2 | (ii) | 1 |
| (C) | XeO3F2 | (iii) | 2 |
| (D) | XeF4 | (iv) | 3 |
Choose the most appropriate answer from the options given below:
\[\ce{XeF6 + H2O ->[Partial][Hydrolysis] \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}}\]
\[\ce{XeF4 + H2O - \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}}\]
Discuss the trends in electronegativity and atomic radii for elements of group 16 17, 18.
