Advanced level 2025 Bamenda archdiocesan mock chemistry 2
Advanced level 2025 Bamenda archdiocesan mock chemistry 2
This question concern periodic table and periodicity of S–block elements
a) The element in period 2 (Li to Ne) of the periodic table show periodic trend
0 State and explain how atomic radius varies across the period
ii) Identify one common feature of the electronic configuration of the s–block element
iii) Lithium is diagonally related to magnesium. Why are the two elements diagonally related?
(3mks)
b) i) Give the formulae of the stable chlorides of the elements Li to Ne
Li Be B C N O F Ne
.
From the table identify the chloride with
i) Bent shape
| ii) Linear shape c) The compound “cisplatin ” has the formula (^(NLLLCy |
(4mks) |
1) Give the oxidation state of platinum in the compound II) What is the coordination number of platinum in the cisplatin?
?
Ill) Give the name of the complex Cu2[Fe(CN)6]–
(3mks)
d) This part is on the group vii (halogens)
i) Complete the table below
1
| Halogen | F | Cl |
| Colour |
Br I
*
ii) Which is the most oxidizing of the elements?
a
iii) The elements undergo displacement as well as disproportionation. Define the underlined terms.
iv) Sodiumhyprochloride(NaOCI) is used as commercial solution. Give one use of this reagent and
explain how it functions
(6mks)
e) This is on sulphur and nitrogen
i) Give the main source of the nitrogen in the haber process
ii) State the conditionTa^dh^haber process to produce ammonia
