Why do group I metals show strong reducing properties?
Why different colours are imparted by the atoms of the gro
to the flame?
Why do the group II metals have high melting and boiling
What is milk of Magnesia? Give its one use.
Discuss the metallic and non-metallic character of group IV
Why does fluorine differ from other members of its group
What is the structure of CO, and SiO, and why they differ
CO, is a gas while SiO, is a solid although C and Si belong
SnCl, is a solid while SnCL is a liquid. Why?
C and Si are always tetravalent but Ge, Sn and Pb show di
CCI, is resistant to hydrolysis but Sich is readily hydrolys
Explain why nitrates and carbonates of Li are not stable?
Explain why solubility of alkaline earth metal carbonates
Answers
Answer:
Explanation:
1) Alkali metals are good reducing agents because alkali metals have one valence electron which they lose to attain stability. Hence, they themselves undergo oxidation causing reduction of others and are good reducing agents
2) Alkali metals impart characteristic colours to the flame due to low ionisation enthalpy, when an alkali metal or its salt is heated in a flame, the valence electrons are excited to higher energy level.
3) Higher melting and boiling points than Group I elements. Less reactive than Group I elements. This is because it is more difficult to lose two electrons compared to losing just one electron. ... Therefore there is a greater attraction between the nucleus and electrons in magnesium than there is in calcium.
4) It is a laxative (osmotic-type) that is thought to work by drawing water into the intestines, an effect that helps to cause movement of the intestines. This medication is also used to treat symptoms caused by too much stomach acid such as heartburn, upset stomach, or indigestion.
5)by going from the top to the bottom of the group 4, the electronegativity decreases because the atoms become larger and the valence electrons are easily rendered. Hence, the reducer and metallic properties increase. carbon is pure non-metallic element. Silicon is semiconductor, germanium has more or less metallic properties, tin and lead are metals.
6)Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen ... Only in 1886 did French chemist Henri Moissan isolate elemental fluorine using ... Industrial production of fluorine gas for uranium enrichment, its largest ... Carbon dioxide and carbon monoxide react at or just above room
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