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WorksheetsXI Chemistry Unit 3 Part 6
Total questions: 10
Worksheet time: 5mins
The minimum amount of energy required to remove an electron from a uni positive cation is called _____ ionization energy.
first
second
third
fourth
The ionization energy _____ down a group.
decreases
increases
remains same
none of these
Ionization energy is expressed in KJ mol-1 or in _____.
Volts (V)
JK-1
pm
Electron Volts (eV)
What factor makes removing a valence electron easier than a core electron?
Nuclear pull
Electron repulsion
Electron Shielding
ZEFF
How does atomic radius affect ionization energy?
A smaller atomic radius means a higher ionization energy
Atomic radius does not affect ionization energy
A large atomic radius means a higher ionization energy
A smaller atomic radius means a lower ionization energy
The ionization energies of beryllium and boron are _____ and _____ KJ mol-1 respectively.
800 and 899
1402 and 1314
899 and 800
1314 and 1402
The ionization energy of Nitrogen is more than that of Oxygen because _____.
Less electronegativity of nitrogen
Nitrogen is left to the Oxygen in the same period of the periodic table.
Nitrogen contains less number of electrons
Nitrogen has half – filled p – orbitals
Beryllium with completely filled _____ orbital is more stable than partially filled valence shell electronic configuration of Boron.
1s
1p
2s
2p
Boron has higher ionization energy than Beryllium.
True
False
The ionization energy _____ along a period.
decreases
increases
remains the same
none of these
