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Exploring Periodicity in Elements

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

What is the general trend of atomic size across a period from left to right?

a)

Atomic size fluctuates randomly across a period from left to right.

b)

Atomic size decreases across a period from left to right.

c)

Atomic size remains constant across a period from left to right.

d)

Atomic size increases across a period from left to right.

2.

How does atomic size change as you move down a group in the periodic table?

a)

Atomic size increases as you move down a group in the periodic table.

b)

Atomic size remains constant as you move down a group in the periodic table.

c)

Atomic size decreases as you move down a group in the periodic table.

d)

Atomic size fluctuates randomly as you move down a group in the periodic table.

3.

Which element has the largest atomic size in the second period?

a)

Lithium (Li)

b)

Neon (Ne)

c)

Beryllium (Be)

d)

Oxygen (O)

4.

What is the trend in ionic size for cations compared to their parent atoms?

a)

Cations are twice the size of their parent atoms.

b)

Cations have the same size as their parent atoms.

c)

Cations are smaller than their parent atoms.

d)

Cations are larger than their parent atoms.

5.

How does the ionic size of anions compare to their parent atoms?

a)

Anions are smaller than their parent atoms.

b)

Anions are only slightly larger than their parent atoms.

c)

Anions are larger than their parent atoms.

d)

Anions have the same size as their parent atoms.

6.

Which ion has a larger size: Na+ or Mg2+?

a)

Na+

b)

Mg2+

c)

K+

d)

Ca2+

7.

What is the trend in electronegativity as you move across a period?

a)

Electronegativity increases across a period.

b)

Electronegativity fluctuates randomly across a period.

c)

Electronegativity remains constant across a period.

d)

Electronegativity decreases across a period.

8.

Which element is the most electronegative in the periodic table?

a)

Nitrogen

b)

Carbon

c)

Oxygen

d)

Fluorine

9.

How does electronegativity change as you move down a group?

a)

Electronegativity remains constant as you move down a group.

b)

Electronegativity fluctuates randomly as you move down a group.

c)

Electronegativity decreases as you move down a group.

d)

Electronegativity increases as you move down a group.

10.

What is the relationship between atomic size and electronegativity?

a)

As atomic size decreases, electronegativity generally increases.

b)

As atomic size increases, electronegativity generally decreases.

c)

Atomic size has no effect on electronegativity.

d)

Larger atoms have higher electronegativity.

11.

What is the trend in first ionisation energy across a period?

a)

First ionisation energy remains constant across a period.

b)

First ionisation energy increases across a period.

c)

First ionisation energy decreases across a period.

d)

First ionisation energy fluctuates across a period.

12.

How does first ionisation energy change as you move down a group?

a)

First ionisation energy remains constant as you move down a group.

b)

First ionisation energy fluctuates randomly as you move down a group.

c)

First ionisation energy decreases as you move down a group.

d)

First ionisation energy increases as you move down a group.

13.

Which element has the highest first ionisation energy in the third period?

a)

Magnesium (Mg)

b)

Argon (Ar)

c)

Chlorine (Cl)

d)

Sodium (Na)

14.

What factors influence the first ionisation energy of an element?

a)

Atomic size, nuclear charge, electron shielding, and subshell type.

b)

Chemical reactivity and phase

c)

Temperature and pressure

d)

Atomic weight and density

15.

How does effective nuclear charge affect atomic size?

a)

Effective nuclear charge has no effect on atomic size.

b)

Effective nuclear charge decreases atomic size.

c)

Effective nuclear charge only affects ionization energy.

d)

Effective nuclear charge increases atomic size.

16.

What role does electron shielding play in determining atomic size?

a)

Electron shielding only affects the mass of the atom.

b)

Electron shielding has no effect on atomic size.

c)

Electron shielding decreases atomic size by increasing the effective nuclear charge.

d)

Electron shielding increases atomic size by reducing the effective nuclear charge on outer electrons.

17.

How does the presence of d and f orbitals affect ionic size?

a)

The presence of d and f orbitals generally leads to smaller cation sizes and larger anion sizes due to increased electron shielding and effective nuclear charge.

b)

d and f orbitals have no effect on ionic size

c)

Cations are larger due to d and f orbitals

d)

Anions become smaller with d and f orbitals present

18.

What is the effect of atomic radius on ionisation energy?

a)

Larger atomic radius results in higher ionization energy.

b)

Smaller atomic radius has no effect on ionization energy.

c)

Larger atomic radius results in lower ionization energy.

d)

Atomic radius does not influence ionization energy at all.

19.

How does the size of an atom influence its electronegativity?

a)

Larger atoms have lower electronegativity due to increased distance from the nucleus.

b)

Larger atoms have higher electronegativity because they can attract electrons more effectively.

c)

Smaller atoms have higher electronegativity due to decreased distance from the nucleus.

d)

Electronegativity is unaffected by atomic size and remains constant across all elements.

20.

What is the significance of periodic trends in understanding chemical behavior?

a)

Periodic trends are significant as they allow prediction of chemical behavior and reactivity of elements.

b)

Periodic trends are only relevant for metals.

c)

Periodic trends are solely based on atomic mass.

d)

Periodic trends have no impact on element bonding.