fill in the chart below. the first row has been completed as an example.\n| element | symbol | atomic number…
fill in the chart below. the first row has been completed as an example.\n| element | symbol | atomic number | period | group |\n| ---- | ---- | ---- | ---- | ---- |\n| sodium | na | 11 | 3 | 1 |\n| krypton | o | | | |\n| | | 79 | | |\n| | | | 4 | 7 |\ngive an atom with the following characteristics.\n a halogen \n b chalcogen \n c alkali metal \n d actinide series \n e lanthanide series \n f alkaline earth metal \n g transition metal \n h nobel gas
Answer
Explanation:
Step1: Recall element properties
Use periodic - table knowledge.
Step2: Fill the table for Krypton
Krypton has symbol Kr, atomic number 36, is in period 4, and group 18.
Step3: Provide examples for each category
a. A halogen is Fluorine (F). b. A chalcogen is Oxygen (O). c. An alkali metal is Lithium (Li). d. An actinide series element is Uranium (U). e. A lanthanide series element is Cerium (Ce). f. An alkaline - earth metal is Calcium (Ca). g. A transition metal is Iron (Fe). h. A noble gas is Helium (He).
| Element | Symbol | Atomic Number | Period | Group |
|---|---|---|---|---|
| Krypton | Kr | 36 | 4 | 18 |
Answer:
a. Fluorine (F) b. Oxygen (O) c. Lithium (Li) d. Uranium (U) e. Cerium (Ce) f. Calcium (Ca) g. Iron (Fe) h. Helium (He)