Ecological Succession. ( ECOSYSTEM, B. Pharmacy, 1st Year, Sem-II, Environmen...
Test 1 (2)
1. Test 1
1. a) Define transition element. [2m]
b) Explain why scandium and zinc are not considered as transition elements whereas
copper is one. [2m]
c) i. Write the electronic configuration of a chromium atom. [1m]
Ii. explain why this configuration disobey the Aufbau rule. [2m]
d) In acidic solution, the dichromate (VI) ion is a powerful oxidising agent.
i. What is the colour of the dichromate (VI) ion? [1m]
Ii.write an ion/electron equation to illustrate the oxidising property of the
dichromate (VI) ion. [2m]
2. How does the electronic configuration of a transition metal differs from the elements
in the main groups of the Periodic Table? You may use iron and calcium as examples.
[5m]
3. Give four characteric properties of transition elements or their compounds. Illustrate
your answer by reference to suitable examples. [8m]
![Test 1
1. a) Define transition element. [2m]
b) Explain why scandium and zinc are not considered as transition elements whereas
copper is one. [2m]
c) i. Write the electronic configuration of a chromium atom. [1m]
Ii. explain why this configuration disobey the Aufbau rule. [2m]
d) In acidic solution, the dichromate (VI) ion is a powerful oxidising agent.
i. What is the colour of the dichromate (VI) ion? [1m]
Ii.write an ion/electron equation to illustrate the oxidising property of the
dichromate (VI) ion. [2m]
2. How does the electronic configuration of a transition metal differs from the elements
in the main groups of the Periodic Table? You may use iron and calcium as examples.
[5m]
3. Give four characteric properties of transition elements or their compounds. Illustrate
your answer by reference to suitable examples. [8m]](https://image.slidesharecdn.com/test12-200421072233/85/Test-1-2-1-320.jpg)
