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WorksheetsCHEM Test 2 (12th) 21-22
Total questions: 10
Worksheet time: 7mins
What is the electronic configuration of H1 ?
1s2
1s1
2s1
We can calculate the quantum numbers of
only the most external electron
only the most internal electron
any electron in the atom
What is the electronic configuration of Li3 ?
1s2 2s1
1s1 2s2
1s1 2s2
If we have the quantum number l=1, the the electron is located in a:
"s" orbital
"d" orbital
"p" orbital
If we have the quantum number n=5, the the electron is located in the:
third period
fifth period
first period
If we have the quantum number ms= -1/2, the the electron orientation is:
upwards
downwards
horizontal
What is the element whose last electon's quantum numbers are n=2, l=1, ml=0, ms=+1/2 ?
carbon
nitrogen
oxygen
If the depiction of the last orbital is 3p4 it means
4 electrons in the "p" orbital in the 3rd period
3 electrons in the "p" orbital in the 4th period
3 electrons in the "p" orbital in the 3th period
If the last orbital of an element is 3s1, then its quantum numbers are
n=2, l=0, ml=1, ms=+1/2
n=3, l=0, ml=1, ms=+1/2
n=3, l=0, ml=0, ms=+1/2
Explain the quantum number ml
