Q.1
Nitrogen atom has an atomic number of 7 and oxygen has an atomic number ofThe total number of electrons in a nitrate ion( $NO_3^-$) is
  • 24
  • 32
  • 30
  • 28
Q.2
Orbital angular momentum depends on __________.
  • m and s
  • n and l
  • l
  • n and m
Q.3
Which property is different for neutral atoms of the two isotopes of the same element
  • None of these
  • Atomic number
  • Number of neutrons
  • Number of protons
Q.4
The quantum number not obtained from the Schrodinger’s wave equation is
  • n
  • m
  • l
  • s
Q.5
How many unpaired electron are present in Ni2+
  • 0
  • 3
  • 1
  • 2
0 h : 0 m : 1 s