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

Calculate the average K.E. of one molecule of ideal gas at 27°C and 1 atm?
→
What are primary and secondary pollutants of air?
→
Why is hydrogen peroxide stored in wax lined bottles?
→
For each of the following pairs, predict which one has lower first ionisation enthalpy?
i. N or O
ii. Na or $\mathrm{Na}^{+}$
iii. $\mathrm{Be}^{+}$or $\mathrm{Mg}^{2+}$
iv. I or $I^{-}$
→
What happens when:
  1. Bromoethane is treated with zinc and hydrochloric acid?
  2. Hydrogen is passed into 2-bromopropane in the presence of palladium?
→
How can you apply green chemistry for the following:To control photochemical smog.
→
Suggest a route to prepare ethyl hydrogensulphate $\left( CH _3- H _2- OSO _2- OH \right)$ starting from ethanol $\left( C _2 H _5 OH \right)$.
→
The work function ($W_0$) of some metals is listed below. Count the number of metals which will show photoelectric effect when light of 300nm wavelength falls on the metal.
Metal Li Na K Mg Cu Ag Fe Pt W
$W_0(\mathrm{eV})$ 2.4 2.3 2.2 3.7 4.8 4.3 4.7 6.3 4.75
→
Conjugate acid of a weak base is always stronger. What will be the decreasing order of basic strength of the following conjugate bases?
$\text{OH}^–,\text{ RO}^–,\text{ CH}_3\text{COO}^–,\text{ Cl}^–$
→
How can you apply green chemistry for the following:To avoid use of halogenated solvents in drycleaning and that of chlorine in bleaching.
→