a) Write an equation to show the effect of heart on the nitrate of:

a) Write an equation to show the effect of heart on the nitrate of:
i) Potassium ii) Silver
b) The table below gives information about elements A1, A2, A3, and A4
i) In which period of the periodic table is element A2? Give reason
ii) Explain why the atomic radius of: I. A1 is greater than that of A2;
II. A4 is smaller than its ionic radius

iii) Select the element which is in the same group as A3

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a) (i) 2KNO_3(s) $\rightarrow$ 2KNO_2(s) + O₂g

ii) 2AgNO_3(s) $\rightarrow$ 2Ag(s) + 2NO₂(g) + O₂(g)

b) i) Period 2. This is because it has two energy levels

ii) I. A2 has greater nucleus charge than A₁ which has its electrons attracted strongly to
the nucleus

II. A4 gains electrons. Incoming electron is repelled by existing electrons making the ionic radius
larger .

iii) A2

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johnmulu answered the question on April 10, 2017 at 10:22

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