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The grid below shows part of the periodic table. Use it to answer the questions that follow. The letters do not represent actual symbols.

The grid below shows part of the periodic table. Use it to answer the questions that follow. The letters do not represent actual symbols.


(a) Which of the elements has the highest atomic radius? Explain.
(b) Identify the most reactive Oxidizing agent. Explain.
(c) Compare the atomic radius of P and R. Explain
(d) Give the formula of one stable ion with an electron arrangement of 2.8 which is:
(i) A Negatively charged divalent ion.
(ii) A Positively charged monovalent.
(e) Given that the mass number of W is 40. Write down the composition of its nucleus
(f) Write the formula of the compounds formed between.
(i) Element R and X.
(ii) Give one property of the structure formed when R and X bond.

Answers

(a) Q- This is because it has the highest number of energy levels.

(b) U– This is because U has the highest nuclear change due to its small atomic radius among the non metals.

(c) P has bigger atomic radius than R. This is because P has higher nuclear charge than R.

(d) i) S^2-

ii) P⁺

(e) P = 18 N = 40 – 18 = 28
P = 18
N = 22

(f) (i)RX₂

(ii)-Compounds with the above structures are soluble in water but insoluble in organic conduct.
-Compounds with the above structure conduct electricity in molten and aqueous state but they are non conductors in solid state.
-Compounds with the above structure exist in crystalline form
-Compounds with the above structure have very high melting and boiling point.

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maurice.mutuku answered the question on September 9, 2019 at 10:11

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