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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 |