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Name: Rev for Test Circle the word or phrase that best completes the statements. 1. (Calcium, Arsenic ) has the larger atomic radii. 2. (Calcium, Barium) has the larger atomic radii. 3. Down a group, atomic radii generally (increases, decreases, remains the same) because the number of shells is (increasing , decreasing, remaining the same) therefore the nuclear force is decreasing) 4. Across a period, atomic radii (increases, decreases, remains the same) because the nuclear force or the hold on the electrons is (increasing, decreasing, remaining the same). 5. (Ionization Energy, Electronegativity, Electron reflection) is the atoms attractions of electrons within a chemical bond. 6. (Sulfur, Selenium (Se)) has a greater electronegativity because it has a greater nuclear foce with less shielding effect. 7. (Boron, Oxygen) has a greater electronegativity because it has a greater nuclear force. 8. Down a group electronegativity (increases, decreases, remains the same) because the number of ( energy levels, protons, valence electrons) is increasing therefore the shielding effect is increasing. 10. Across a period electronegativity (increases, decreases, remains the same) because the number of protons in the nucleus is increasing with the same number of shells increasing the nuclear force. 11. When calcium forms a stable ion it will (loose, gain) electrons called a(n) (cation ,anion) 12. When lithium forms a stable ion the charge will be __________________. 13. When phosphorus forms a stable ion it will (llose, gain) electrons called a(n) ( cation, anion) 14. When sulfur forms a stable ion the charge will be _____________. 15. The potassium ion is (larger, smaller, the same size ) than the neutral atom. The reason why is electrons were (gained, lost, shared) making the nuclear force increase, decrease, remain the same) 16. The silicon ion is (larger, smaller, the same size) than the neutral atom. The reason why is electrons were (gained, lost, shared) making the nuclear force (increase, decrease, remain the same) 17. An element that would react similar to calcium in a reaction would be ____________. 18. AN element that would react similar to bromine in a reaction would be ____________. 19. If carbon and oxygen were bonded in a molecule to one another, which one would the electrons spend more time with? ____________ why?__________________________ 20. Using your diagonal rule please complete the following: Element/ Ion Symbol # E Electron Configuration 1. Lithium 2. Ion of Lithium 3. Arsenic 4. Ion of Arsenic 21. Cindy is working in the lab trying to do reactions with neon gas. She is unsuccessful. Why? 22. If potassium reacts with water by bubbling and releasing hydrogen gas, what would you expect the reaction of lithium to be like? Francium? 23. How does the size of a metal determine the reactivity of the atom? WHY 24. How does the size of a halogen determine the reactivity of the atom? WHY? 25. Identify the most electronegative element in each set. a. F vs. C Al vs. Cl b. Cs vs. I Ca vs. Cl 26 Identify the element with the lowest ionization in each set. a. F vs. C Al vs. Cl b. Cs vs. I Ca vs. Cl 27. Identify the largest element in each set. a. F vs. Cl I vs. Cl b. Cs vs. I Ba vs. Cl