1) what is the factor of atomic size a) screening effect b) solubility c) no proton d) effective nuclear charge 2) which of the following have a larger size a) Mg²+ b) Na+ c) Ne d) F- e) 0²- 3) factors affecting the ionisation energy a) atomic radius b) atomic size c) screening effect 4) state the nature of MgO a) basic oxide b) metalloid c) amphoteric oxide d) acidic oxide 5) when across a period,number of protons is a) decrease b) constant c) increase 6) what is outermost electrons of Au (gold) a) 2 b) 4 c) 3 d) 1 7) anions always ............. than their atoms a) smaller b) larger c) higher d) lower

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