Consider the elements: Cs, Ne, I and F Identify the element that … - Vidyadip

Question

Consider the elements:

Cs, Ne, I and F

Identify the element that exhibits both positive and negative oxidation states.

✓

Answer

I. Because of the presence of seven electrons in the valence shell, I shows an oxidation state of -1 (in compounds of I with more electropositive elements such as H, Na, K, Ca, etc.) or an oxidation state of +1 compounds of I with more electronegative elements, i.e., O, F, etc.) and because of the presence of d-orbitals it also exhibits +ve oxidation states of +3, +5 and +7.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Redox Reactions→Redox Reactions — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Explain the various steps of mechanism of chlorination of methane.

$\text{Zn}\text{(s)}+\text{Cu}^{2+}\text{(aq)}\xrightarrow{ \ \ \ \ \ \ \ \ }\text{Zn}^{2+}\text{(aq)}+\text{Cu}\text{(s)}$ Is this reaction redox reaction? If yes, name the oxidising agent as well as reducing agent.

Lead chloride has a solubility product of $1.7 \times 10^{-5}$ at 298 K . Calculate its solubility at this temperature.

Write formula for the following compound:

Iron(III) sulphate.

In each of the following pairs of salts, which so one is more stable?

Ferrous and ferric salts.
Cuprous and cupric salts.

The enthalpy of formation of carbon monoxide and steam are -110.5 and - 243.0kJ respectively. Calculate the heat of the reaction when steam is passed over coke as C(s) + H₂O(g) → CO(g) + H₂(g).

Given that $\Delta\text{H}=0$ for mixing of two gases. Explain whether the diffusion of these gases into each other in a closed container is a spontaneous process or not?

$\text{N}_2(\text{g})+3\text{H}_2(\text{g})\rightleftharpoons2\text{NH}_3(\text{g});$
$\text{K}=0.50\text{ at }673\text{K.}$
Write the equilibrium expression and equilibrium constant for reverse reaction.

(a) Name the halide ion whose oxidation can't be done by chemical method. How it can be oxidised?
(b) Explain the bleaching action of chlorine.

In reaction $P + Q \rightleftharpoons R + S$, the initial concentration $P$ is double of initial concentration of Q . At equilibrium the concentration $R$ is three times of $Q$, then calculate equilibrium constant for the reaction.