5 (a) Explain why copper (I) sulphate solution looks blue when placed in sunlight
(b) What are the sources of the followme radiations?
- Visible radiation
Trenal
- Ultraviolet radiation
(0) Draw a schematic diagram of ble spectrometer.
(a) Why are group I elements
(1) Univalent
(ii) Largely ionic
(1) Strongly reducing agents
C) Give equations to show the rea lion between sodium and
(H20 (11) H(111)
-1 (a) Define molar volume
(b) Find the volume occupied by 3. mg of chlorine gas at room temperature and
Pressure (molar volume = 22.
4 C 1 = 35.5).
(c) Calculate the percentage by mnus of calcium in the compound Caro
(Ca = 40, C = 12,0 = 1)
tween sodium and
w

the answer is d : ) have a good da

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metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.