Chemistry
(i) Write the IUPAC names of each of the following:
(ii) Rewrite the following sentences by using the correct symbol > (greater than) or < (less than) in the blanks given:
The ionization potential of Potassium is ………….. that of Sodium.
The electronegativity of Iodine is ………….. that of Chlorine.
Related Questions
(i) A gas of mass 32 gms has a volume of 20 litres at S.T.P. Calculate the gram molecular weight of the gas.
(ii) How much Calcium oxide is formed when 82 g of calcium nitrate is heated? Also find the volume of nitrogen dioxide evolved:
2Ca(NO3)2 ⟶ 2CaO + 4NO2 + O2
[Ca = 40, N = 14, O = 16]
Match the salts given in column I with their method of preparation given in column II.
Column I Column II (i) Pb(NO3)2 from PbO (A) Simple displacement (ii) MgCl2 from Mg (B) Titration (iii) FeCl3 from Fe (C) Neutralization (iv) NaNO3 from NaOH (D) Precipitation (v) ZnCO3 from ZnSO4 (E) Combination Use the letters only written in the Periodic Table given below to answer the questions :
I II III IV V VI VII O 1 L 2 Q E G J Z M 3 R 4 T (i) State the number of valence electrons in atom J.
(ii) Which element shown forms ions with a single negative charge?
(iii) Which metallic element is more reactive than R?
(iv) Which element has it's electrons arranged in four shells?
Fill in the blanks by selecting the correct word :
(i) If an element has a low ionization energy then it is likely to be ………. (metallic/non metallic).
(ii) If an element has seven electrons in it's outermost shell then it is likely to have the ………. (largest/smallest) atomic size among all the elements in the same period.