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the atom
atomic structure
| Question | Answer |
|---|---|
| Who created the periodic table? | Dimitri mendeleev |
| How many elements are in the periodic table? | 118 |
| what particles make up the atom? | protons, neutrons and electrons |
| what is the atomic number of an element? | number of protons in the atom of an element |
| what is the mass number of an element ? | sum of protons and neutrons in an atom of an element |
| how many groups are there in the periodic table? | 8 |
| what charge is on a proton? | positive |
| what charge is on a neutron? | neutral |
| what charge is on an electron? | negative |
| what is found in an orbital? | electrons |
| where is the proton located? | the nucleus |
| where is the neutron located? | the nucleus |
| do any 2 elements have the same atomic number ? | no |
| how many electrons are in the first shell of an atom? | 2 |
| how many electrons does an atom want in the outer shell? | 8 |
| where is the electron likely to be found ? | in an orbital around the nucleus |
| true/false an atom becomes more stable with a full outer shell? | true |
| true/false carbon has 3 shells? | false |
| true/false neils bohr created a model for drawing atoms? | true |
| Where are the noble gases located on the periodic table? | group 8 |
| true/false the noble gases are very reactive? | false |
| why are noble gases nonreactive? | they have a full outershell |
| is neon a noble gas? | yes |
| how many electrons are in neon outer shell? | 8 |
| group 7 has 7 electrons on their outershell .. how many electrons does group 2 have on its outershell? | 2 |