(a) Write the electronic configuration of an element with atomic number 15, indicating the distribution of electrons in the energy sub-levels
(b) Give the formula and the colour of the complex formed between ammonia and copper (II) ions
Explanation
(a) 1s\(^2\)2s\(^2\)2p\(^6\)3s\(^2\)3p\(^3\)
(b) Cu\(^2\) + 4NH\(_3\) —> Cu(NH\(_3)^{2+}_4\)
(Deep blue in colour)