WorksheetsElectron Affinity
Total questions: 25
Worksheet time: 25mins
The energy released when an electron is ADDED is the....
Atomic Radius
Electronegativity
Electron Affinity
Ionization Energy
Which noble gas has the HIGHEST electron affinity?
He
Ne
Xe
Rn
Which of the following has the LOWEST electron affinity?
Na
B
F
Li
How is electron affinity described?
The ability for an atom to lose an electron.
The likelihood of an atom to gain an electron.
How large or small an atom is.
The number of protons in the nucleus of an atom.
Which one of the following would result in the greatest electron affinity?
A large atom, with a weak positive force in the nucleus.
A large atom, with a strong positive force in the nucleus.
A small atom, with a weak positive force in the nucleus.
A small atom, with a strong positive force in the nucleus.
Which statement is correct concerning electron affinity of atoms?
It decreases left to right across a period and increases top to bottom in a group
It increases left to right in a period and decreases top to bottom in a group
It decreases left to right in a period and decreases top to bottom in a group
It increases left to right in a period and increases top to bottom in a group
As you move from the top of a column (group) to the bottom of the column (group) what happens to electron affinity?
electron affinity increases
electron affinity decreases
electron affinity stays the same
more information needed to answer this question
Of the given elements, which will have the highest electron affinity?
phosphorus (P)
arsenic (As)
sulfur (S)
oxygen (O)
What is the definition of electron affinity?
The energy change when an electron is added to a neutral atom in the gaseous state.
The energy required to remove an electron from a neutral atom.
The tendency of an atom to attract electrons in a chemical bond.
The size of an atom's electron cloud.
Which element is likely to have the highest electron affinity?
Fluorine (F)
Chlorine (Cl)
Bromine (Br)
Iodine (I)
How does electron affinity change across a period in the periodic table?
It increases from left to right.
It decreases from left to right.
It remains constant.
It fluctuates randomly.
Which of the following elements has the lowest electron affinity?
Neon (Ne)
Oxygen (O)
Sulfur (S)
Carbon (C)
What is the relationship between electron affinity and atomic size?
Electron affinity decreases as atomic size increases.
Electron affinity increases as atomic size increases.
Electron affinity is independent of atomic size.
Electron affinity is the same for all atomic sizes.
Which of the following statements is true about electron affinity?
It is always a positive value.
It is always a negative value.
It can be either positive or negative.
It is zero for all elements.
Why do halogens have high electron affinities?
They have a nearly complete valence shell and readily gain electrons.
They have a low nuclear charge.
They have a large atomic radius.
They have a high ionization energy.
What is the trend of electron affinity in a group of the periodic table?
It decreases down the group.
It increases down the group.
It remains constant down the group.
It varies unpredictably down the group.
Which of the following elements has a higher electron affinity than sulfur (S)?
Oxygen (O)
Phosphorus (P)
Selenium (Se)
Tellurium (Te)
What is the significance of electron affinity in chemical reactions?
It indicates how easily an atom can gain an electron.
It shows the energy required to remove an electron.
It measures the size of an atom.
It determines the number of valence electrons.
Which of the following has the greatest electron affinity?
A small atom with a high nuclear charge.
A large atom with a low nuclear charge.
A small atom with a low nuclear charge.
A large atom with a high nuclear charge.
How does electron affinity affect the reactivity of nonmetals?
Higher electron affinity increases reactivity.
Higher electron affinity decreases reactivity.
Electron affinity does not affect reactivity.
Reactivity is only affected by atomic size.
Which of the following best describes the electron affinity of noble gases?
They have low electron affinities.
They have high electron affinities.
Their electron affinities are unpredictable.
They have no electron affinity.
What happens to the electron affinity of an atom when it becomes an anion?
It becomes more negative.
It becomes more positive.
It remains unchanged.
It becomes zero.
Which of the following elements is expected to have a lower electron affinity than chlorine (Cl)?
Bromine (Br)
Fluorine (F)
Iodine (I)
Neon (Ne)
How does electron affinity relate to electronegativity?
Both increase across a period and decrease down a group.
Both decrease across a period and increase down a group.
Electron affinity increases while electronegativity decreases across a period.
Electron affinity decreases while electronegativity increases down a group.
Which of the following factors does not affect electron affinity?
Atomic radius
Nuclear charge
Electron shielding
Number of isotopes
