Question

Questions are worth 4 polls U as you go from left as you go from the 1. The first ionization energies of the elements to right across a period of the periodic table, and bottom to the top of a group of the periodic table. A. Increase, increase B. Increase, decrease C. Decrease, increase D. Decrease, decrease E. Both change unreliably 2. Most nonmetals form oxides that are A. basic B. neutral C. salty D. acidic E. ionic 3. The largest ion in period four of the periodic table is A. K+ B. Ti+4 C. As D. Br E. Krº 4. An alkali metal will form an oxide with a formula of A. MO2 B. MO C. M20 D. M202 E. M203 5. Which of the following is not a characteristic of most metals? A. They are shiny. B. They dissolve in organic solvents. C. They are ductile D. They conduct electricity. E. They are malleable

Answer 1

1. (A) 2.(D) 3. (C) 4.(C) 5.(B)

Ionisation energy increases as we go from left to right due to decrease in atomic size and increases up the group as atomic size decreases when we go from bottom to top Hence, correct option is A. 2. Non form So, metal oxides are acidic in nature as they acid when dissolved in water. the correct option is to 1. 3. U In a period, atomic size decreases from left to right. When they form ions, the anions are always langer in size than the cations. with the increase number of negative change, the eonic size increases. So, As3 will have the highest ionic size. Hence, the correct option is a Valency of alkali metals is 1. So, they form onides of the type M₂0. Hence, the correct option is a Metals are shiny, ductile, conduct electricity and are malleable. They are not soluble in organic solvents. So, they cannot be dissolve in organic solvents. Hence, the correct option is [B]. - 4.