Pls answer all question of I will report
All answer or I will report
Answers
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Q 18.
(a)
i. Neon, Argon
ii. Florine, Chlorine
iii. Lithium, Sodium
iv. Carbon, Silicon
(b)
LiCl (Lithium Chloride)
(c)
2, 8 (Neon)
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Q.19
i. Ca
ii. Al
iii. O, S
iv. F
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Q.20
K is more reactive than Li because down a group, electro-positivity increases, ie the tendency to lose an electron increases.
This is because down a group, the number of shells also increases, so, the distance between the neucleus and the valance shell increases. So, the force of attraction between them also decreases. Hence, it is easier to lose electrons.
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Q. 21
Alkali metals (because on reaction with water, they form alkalies)
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Q. 22
Groups, Periods
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Q. 23
increases from 1 to 8
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Q. 24
Decreases because the force of attraction between the neuleus and the valance electrons increases because of increase in the no. of electrons and protons.
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Q. 25
Increasing
(Reason explained earlier also...)
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Q. 26
Decreasing
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Q. 27
Mercury (Hg)
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Answer:
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