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What's the difference between alkali metals and alkaline earth metals and transition metals?
Periodic Table Puzzle Help?
Match the letters of an element that starts with any letter from A-J, and best matches the definition, You can use each letter only once, so choose the best answer for each. 1. An alkali metal 2. An alkaline earth metal 3. An inactive gas 4. An active nonmetal 5. A semimetal 6. An inner transition element 7. Its most common oxidation state is -2 8. A metal with more than one oxidation state 9. Metal with an oxidation number of +3 10. Has oxidation numbers of +1 and -1 Thank you.Anyone who can help with basic chemistry/periodic table ?
Its a basic highschool chemistry class, so its all pretty simple, I'm just having a horrible time figuring out questions on an assignment that I have. Below I'll put some examples & if you can help please let me know would appreciate it more than I can even say This part of the assignment is matching, it gives each groups as options Alkali Metals Alkaline Earth Metals Halogens Noble Gases Boron Group Chalogens Carbon Group And then here are some of the questions word for word "However; with enough electricity Kr and Xe can be forced into a compound with O" "Inert" "Low melting points" "Malleable" "Melting points" "Most familiar metals" "Non-reactive" "Reactive with water" "Reflects light" "soft, highly" "usually shiny" "very reactive" The questions are obviously terribly vague& I just flat out have no clue so what would these answers be?Chemistry questions please help!!!?
can anyone help me with these questions i need to know them for my big exam next week: 1.how many valence electrons do: alkaki metals have? alkaline earth metals have? transition metals have? halogens have? noble gases have? 2. where re the acids on the pH scale?what ion cids donate?what is the pH of acid rain? 3. how is the periodic table arranged? 4. if an ion has 10 electrons and 12 protons what is the charge? 5. if a solution has a pH og 5 and another solution has a pH of 3, how many times more acidic is the second solution? 6. whats the difference between atomic number and mass number? 7. who developed the atomic theory? 8. what determines the reactivity of a metal or non metal? 9. how do you determine the number of protrons?neutrons?and electrons?Science Dimensions Hw Book 3, Can You Help?
29: The 3rd element in the alkaline earths 30. A halogen that is sometimes used as a antiseptic on wounds 31. A halogen in table salt 32. The alkali metal in table salt 33. The smallest of the halogens 34. The element that would show chemical properties most similar to carbon 35. An atom that would show very similar properties to oxygen 38 I am the 1st of the metals in group V 39. The biggest of the atoms in Group II 40. I have a total of 15 electrons 41. I have 13 protons 44. I have an electronic configuration of 2, 8, 8 45. My electronic configuration is 28, 8, 1 46. I am the only noble gas that does not have 8 electrons in its outer shell 47. I am the period 2 element most likely to form an ion with the 02 48. I am the period 3 element most likely to form an ion with the charge +2 49 My K and L shells are filled with electrons but there are only 2 electrons in My M Shell 50. I have 2 completely filled shells and no electrons anywhere else Thanks For The Help! Cheers.
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