Download App

Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties2 Marks
Question
Predict the formulae of the stable binary compounds that would be formed by the following pairs of elements:
  1. Silicon and oxygen.
  2. Aluminium and bromine.
  3. Calcium and iodine.
  4. Element with atomic number 114 and fluorine.
  5. Element with atomic number 120 and oxygen.
✓

Answer

i. $\mathrm{SiO}_2$
ii. $\mathrm{AlBr}_3$
iii. $\mathrm{Cal}_2$
iv. $\mathrm{UuqF}_4$
v. XO where ' X ' is element with atomic number 120.

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 Classification of Elements and Periodicity in Properties→Classification of Elements and Periodicity in Properties — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The mass of an electron is $9.1 \times 10^{-31} \mathrm{~kg}$. If its kinetic energy is $3.0 \times 10^{-25} \mathrm{~J}$, calculate its wave length.
[Given: $\mathrm{h}=6.626 \times 10^{-34} \mathrm{~kg}$ ]
→
A sample of $HI ( g )$ is placed in a flask at a pressure of 0.2 atm . At equilibrium partial pressure of $HI ( g )$ is 0.04 atm. What is $K _{ p }$ for the given equilibrium?
$
2 H I(g) \rightleftharpoons H_2(g)+I_2(g)
$
→
At 523 K temperature following reaction $PCl _5(g) \rightleftharpoons PCl _3(g)+ Cl _2(g)$ value of $K _{ p }$ is 2.35 atm then calculate value of $K_c \cdot\left(R=0.082 L\right.$ atm degree ${ }^{-1}$ $mol ^{-1}$.
→
Explain why pure liquids and solids can be ignored while writing the equilibrium constant expression?
→
$\text{Zn}\text{(s)}+\text{Cu}^{2+}\text{(aq)}\xrightarrow{ \ \ \ \ \ \ \ \ }\text{Zn}^{2+}\text{(aq)}+\text{Cu}\text{(s)}$ Is this reaction redox reaction? If yes, name the oxidising agent as well as reducing agent.
→
What is the ratio of average kinetic energy of oxygen molecule to that of ozone molecule at 27°C?
→
$\text{H}_2(\text{g})+\text{I}_2(\text{g})\rightleftharpoons2\text{HI}(\text{g}),\text{K}=49$
What is the value of K, for the reaction:
$\text{H}_2(\text{g})\rightleftharpoons\frac{1}{2}\text{H}_2(\text{g})+\frac{1}{2}\text{I}_2(\text{g})?$
→
Compare the relative stability of the following species on the basis of molecular orbital theory and indicate their magnetic properties:
$\text{O}^+_2,\text{O}^-_2.$
→
How does electronegativity and non - metallic character related to each other?
→
Rationalise the given statements and give chemical reactions:
Lead(IV) chloride is highly unstable towards heat.
→