WorksheetsXI Chemistry Unit 3 Part 7
Total questions: 10
Worksheet time: 5mins
Electron affinity is defined as the amount of energy required in the case of _____ when an electron is added to the valence shell of an isolated neutral gaseous atom.
alkali metals
noble gases
halogens
chalcogens
Electron affinity is expressed in _____.
KJ mol-1
eV
pm
JK-1
When we add electron to the neutral atom, it will become a / an _____.
Cation
α – particle
Anion
β – particle
Electron affinity _____ in a period.
decreases
increases
The elements have almost zero electron affinity are _____.
Be & B
N & O
Na & N
Be & N
In each period, _____ has high electron affinity.
halogen
alkaline earth metal
alkali metal
chalcogen
Electron affinity _____ down a group.
decreases
increases
Size of the atoms influence the electron affinity value.
True
False
Electron affinity of Oxygen is lower than Sulphur due to _____.
low electron density
high electron density
stable electronic configuration
large size
Electronegativity is a measurable quantity.
True
False
