Advertisements
Advertisements
Question
The electronic configuration of metal A is 2, 8, 18, 1.
The metal A when exposed to air and moisture forms B a green layered compound. A with con. H2 SO4 forms C and D along with water. D is a gaseous compound. Find A, B, C, and D.
Advertisements
Solution
(i) The electronic configuration of metal (A) is 2, 8, 18, 1. A is copper (Z = 29)
(ii) (A) Copper exposed to air and moisture forms a green layered compound (B) that is copper carbonate.
\[\ce{\underset{\text{(A)}}{2Cu} + O2 + CO2 + H2O-> CuCO3.\underset{\text{(B)}}{Cu(OH)2}}\]
(iii) Copper (A) reacts with conc.H2SO4 to give copper sulphate (C) and Sulphur dioxide (D).
\[\ce{\underset{\text{(A)}}{Cu} + conc.2H2SO4->\underset{\text{(C)}}{CuSO4} + \underset{\text{(D)}}{SO2↑} + 2H2O}\]
| A | Copper | Cu |
| B | Copper carbonate | \[\ce{CuCO3.Cu(OH)2}\] |
| C | Copper sulphate | CuSO4 |
| D | Sulphur dioxide | SO2 |
APPEARS IN
RELATED QUESTIONS
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Which is greater in size Fe2+ or Fe3+?
Give reasons for the following:
The size of the anion is greater than the size of the parent atom.
Study the radius of the element given below and answer the following questions.
| elements | K | Na | Rb | Cs | Li |
| Atomic radius (pm) | 231 | 186 | 244 | 262 | 151 |
a) Which of the above elements have the smallest atom?
b) In which group of the modern periodic table the above element are belongs?
c) What is the periodic trend observed in the variation of atomic radii down a group?
The following questions refer to the Periodic Table.
What happens to the atomic size of elements moving from top to bottom of a group?
When an atom of iodine becomes an iodine ion (I–) the radius will ______
Which of the following gives the correct increasing order of the atomic radii of O, F and N?
Write the formula of the product formed when the element A (atomic number 19) combines with the element B (atomic number 17). Draw its electronic dot structure. What is the nature of the bond formed?
An element with the largest atomic radius among the following is ______.
