Which of the following pairs will form the most stable ionic bond?
Mg and F
The stability of the ionic bond depends upon the lattice energy which is expected to be more between Mg and F due to +2 charge on Mg atom.
0.63 g of a dibasic acid neutralises 100 mL of 0.1 N NaOH solution. Molar mass of dibasic acid is:
Silver salt of a diabasic acid has 27% silver. Molar mass of dibasic acid is:
Depression in freezing point of 1 molal urea solution is Depression in freezing point when 0.18 g of a non-electrolyte is added to 10 g water is Thus, molar mass of the non-electrolyte is:
Which of the organic compounds will give red colour in Lassaigne test?
6 g of the organic compound on heating with NaOH gave which is neutralised by 200 mL of 1 N HCl. Percentage of nitrogen is:
Haemoglobin is a chromoprotein having 4 atoms of Fe in each molecule. Analysis showed 0.35% Fe. Hence, its molecular weight is:
Tyrosine is one of the amino acids present in protein. Its content in protein is 0.22% and its molecular weight is . Lowest molecular weight of protein is:
Platinum salt of an organic base contains 32.5% platinum.
Hence, equivalent weight of the base is: (Pt = 195)
The electronic structure of four elements A, B, C, D are
The tendency to form electrovalent bond is largest in
Elements have electronegativities 1.2 and 3.0, bond formed between them would be