Which of the following properties indicate that an elemen...
Which of the following properties indicate that an element is a metal. It
I. reacts with oxygen to form an acidic oxide
II. forms ionic chlorides
III. has variable oxidation states
IV. displaces hydrogen from dilute HCl
I and III only
I and II only
II and IV only
I, II, III and IV
Correct answer is C
- Ionization behaviour; The atoms of non-metals usually have four to seven valence electrons. They have a great tendency to ionize by accepting electrons to form negative ions.
- Reaction with acids; A metal which is more electro positive than hydrogen readily displaces the hydrogen ion, H+, from an acid.
Inspite of the electronic configuration, 1s22s22p2, carbon is tetraavalent because?...
The metallurgical process in which a metal is obtained in a fused state is called ...
The IUPAC nomenclature of the compound H3C - CH(CH3) - CH(CH3) - CH2 - CH3...
Which of the following solids would not decompose on heating? ...
Proteins in acid solution undergo ...
The appropriate test paper to use in the above experiment is moist ...