Across a period, from left to right in the Modern periodic Table, the number of electron shells (i) _________________ and the number of valence electrons (ii) ________________. The atomic radius of these elements (iii)__________________, the tendency to attract electrons (iv) ________________ and therefore, the ionization potential (v)__________________.
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1. increases
2. decreases
3. decreases
4. increases
5. increases
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