3 marksAtomic Structure

CSEC Chemistry · May/June 2005 · Paper 2 · Question 2(a)

Atoms of element A (¹⁹₉A) readily combine with those of element B (²⁷₁₃B).

Draw a labelled diagram to illustrate the number of protons, neutrons and electrons present in an atom of B.

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Other parts of this question

2(b)To which group of the periodic table does element A belong? Give a reason for your answer. Element A belongs to Group _____. Reason: _____.[2 marks]
2(c)What type of chemical bonding will be formed when A combines with B? Give a reason for your answer. Type of chemical bonding: _____. Reason: _____.[3 marks]
2(d)(i)Write the chemical formula of the compounds expected to be formed when atoms of element A combine with those of element B. Chemical formula: _____.[1 mark]
2(d)(ii)Write the chemical formula of the compounds expected to be formed when atoms of element A combine with each other. Chemical formula: _____.[1 mark]
2(d)(iii)Based on your answer in (d)(i) on page 9 and the information given in the question, calculate the mass of compound that will be formed when 54g of B reacts…[2 marks]
2(e)State THREE likely differences in the properties of the compound formed in (d)(i) when compared to the compound formed in (d)(ii). THREE differences in…[3 marks]

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