(i) NACl has mobile ions in molten state and in aqueous solution
(ii) Graphite has delocalized electrons in the structure which carry electric current
maurice.mutuku answered the question on October 15, 2019 at 08:59
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(b) Hydroxonium ion (H3O+)(Solved)
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(b) Hydroxonium ion (H3O+)
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(The letters do not represent the actual symbols of the elements)(Solved)
Study the information in the table below and answer the questions that follow.
(The letters do not represent the actual symbols of the elements)
(a) What is the general name given to the group in which elements P, Q and R belong?
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Date posted: October 15, 2019. Answers (1)
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Study it and answer the question that follows.
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Date posted: October 15, 2019. Answers (1)
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(i) Atomic radius increases from A to C and from E to G. Explain
(ii) Explain the difference in the atomic and ionic radii of group X elements
(iii) Elements C and G belong to the same period. Explain why the atomic radius of C is
greater than that of G
(iv) Give the formula of the compound formed when B and F react
(v) What type of bonding is formed in the compound above? Explain
(vi) Starting with the least reactive, arrange the elements in group Y in the order of reactivity.
Explain:
Date posted: October 15, 2019. Answers (1)
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(b) Select two elements which are coloured gases
(c) Explain why Z has the highest boiling point
(d) Write an equation for the reaction of element Z with iron metal
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Date posted: October 15, 2019. Answers (1)
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(iii) Molten Lead Bromide(Solved)
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a) Write the electronic configuration of the most stable ion of W
b) Write the formula of the oxide...(Solved)
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a) Write the electronic configuration of the most stable ion of W
b) Write the formula of the oxide of the element W
Date posted: October 15, 2019. Answers (1)
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The grid below is part of the periodic table. The elements are not represented by their actual symbols. Use the information to answer the questions that follow.
a) (i) Which is the most reactive
(I) Non — metal?
Explain
(II) Metal?
Explain
(ii) Name the family to which elements T and Q belongs.
(iii) Write the formula of the compound formed when W reacts with S.
(iv) Name the type of bond and structure formed when elements R and K react.
(v) Explain why element N doesn’t form compounds with other elements.
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Date posted: October 15, 2019. Answers (1)
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(a) (i) Identify the element that gains electrons most readily
(ii) Which of the metal is most reactive? Explain
(iii) What name is given to the family of elements to which elements X and T belong?
(iv) Explain why:-
(I) Ionic radius of Q is larger than that of M
(II) Atomic radius of Q is greater than that of S
(v) Which of the element in the table does not have the ability to form an ionic or covalent
bond? Explain
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Date posted: October 15, 2019. Answers (1)