a) Element C: It readily gains an electron to attain stability.
b) i) AB2
ii) Covalent bond
c) (i) Halogens
(ii) C2(g) + 2H-(aq) $\rightarraw$ 2C(aq) + H2(aq)
d) Atoms of F are bonded by strong covalent bonds forming a giant atomic structure hence high boiling
point unlike molecules of G which are held by weak Van der Waal’s forces forming simple molecular
structure.
e) D2O and D2O2
johnmulu answered the question on April 10, 2017 at 10:04
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b) The table below gives the number of electrons, protons and neutrons in particles
A, B, C, D, E, F and G.
(Solved)
a) Other than their location in the atom, name two other differences between an electron and a proton.
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Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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Use the information to answer the questions that follow.
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b) Select the letter which represents the best oxidizing agent. Give a reason for your answer.
Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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b) Select an element which is
i) The most reactive non-metal
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Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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The letters do not represent the actual symbols of the elements
(Solved)
Study the information given in the table below and answer the questions that follow.
The letters do not represent the actual symbols of the elements
a) Select the elements which belong to the same:
i) Group
ii) Period
b) Which element
i) is in gaseous state at room temperature? Explain. (Take room temperature to be 298K)
ii) Does not form an oxide?
c) Write the
i) Formula of the nitrate of element T.
ii) Equation for the reaction between elements S and U
d) What type of bond would exists in the compound formed when U and T react? Give a reason for your answer
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ii) Anode
Date posted: April 10, 2017. Answers (1)
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Select a substance:
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b) That is not likely to be an element
Date posted: April 10, 2017. Answers (1)
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ii) Write the formula of the compound formed when element H reacts with elements K.
iii) Explain why the melting point of J is higher than that of K.
iv) What is the oxidation state of J in its chloride.
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Date posted: April 10, 2017. Answers (1)
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Select the substance that would be most suitable
a) For making a cooking pot
b) As a thermal insulator
Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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Explain:
a) The trend shown by Li, Na and K.
b) Why the atomic radii of elements Be, Mg and Ca are lower than those of Li, Na and K.
Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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Study it and answer the questions that follow:
(Solved)
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Study it and answer the questions that follow:
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b) Explain why the boiling point of iodine is much higher than that of chlorine.
Date posted: April 10, 2017. Answers (1)
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a) Write the electron arrangement for the stable ion formed by W.
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Date posted: April 10, 2017. Answers (1)
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Date posted: April 10, 2017. Answers (1)
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(The letters are not the actual symbols of elements)
(Solved)
The grid below is part of the periodic table. Use it to answer the questions that follow.
(The letters are not the actual symbols of elements)
a) Indicate on the grid the position of an element represented by letter, V whose atomic number is 14.
b) Select a letter which represents a monoatomic gas.
c) Write an equation for reaction between Q and T.
Date posted: April 10, 2017. Answers (1)