1.

Parts (a) to (e) refer to changes In the properties of elements on moving from left to right across a period of the periodic table. For each property, choose the correct answer.(a) The non-metallic character of the elements:(i) decreases(ii) increases,(iii)remains the same,(iv)depends on the period(b) The electronegativity:(i) depends on the number of valence electrons,(ii) remains the same,(iii)decreases,(iv)increases.(c) The ionization potential:(i) goes up and down(ii) decreases(iii) increases(iv) remains the same(d) The atomic size:(i) decreases,(ii) increases,(iii)remains the same,(iv)sometimes increases and sometimes decreases.(e) The electron affinity of the elements in groups 1 to 7:(i) goes up and then down.(ii) decreases and then increases,(iii) increases,(iv) decreases.

Answer»

(a) Increases

(b) Increases

(c) Increases

(d) Decreases

(e) Increases



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