Q1) Which scientist is credited with developing the modern periodic table?

A) Dmitri Mendeleev

B) Antoine Lavoisier

C) John Dalton

D) Albert Einstein

Q2) How are elements arranged in the modern periodic table?

A) According to increasing atomic number

B) According to increasing atomic mass

C) Alphabetically

D) Randomly

Q3) The vertical columns in the periodic table are called:

A) Rows

B) Periods

C) Groups

D) Blocks

Q4) Elements in the same group have similar:

A) Atomic numbers

B) Atomic masses

C) Chemical properties

D) Physical properties

Q5) Which group of elements is known as the "noble gases"?

A) Group 1

B) Group 2

C) Group 17

D) Group 18

Q6) Which element is located at the top of Group 17 (Group VIIA) in the periodic table?

A) Fluorine

B) Chlorine

C) Bromine

D) Iodine

Q7) Elements in the same period have the same number of:

A) Protons

B) Neutrons

C) Electrons

D) Shells

Q8) The elements with atomic numbers 57 to 71 are known as:

A) Lanthanides

B) Actinides

C) Transition metals

D) Alkaline earth metals

Q9) The element with the highest electronegativity value is:

A) Francium

B) Fluorine

C) Lithium

D) Neon

Q10) The property that increases gradually from left to right across a period in the periodic table is:

A) Atomic radius

B) Electronegativity

C) Ionization energy

D) Metallic character

Q11) The first ionization energy generally:

A) Increases across a period

B) Decreases across a period

C) Remains constant across a period

D) Fluctuates randomly across a period

Q12) Which group of elements tends to lose electrons to form positive ions?

A) Alkali metals

B) Halogens

C) Noble gases

D) Transition metals

Q13) The element with the lowest electronegativity value is:

A) Francium

B) Fluorine

C) Lithium

D) Neon

Q14) What is the general trend of atomic size as you move down a group in the periodic table?

A) Increases

B) Decreases

C) Remains constant

D) Fluctuates unpredictably

Q15) Which of the following elements has the highest first ionization energy?

A) Potassium

B) Sodium

C) Lithium

D) Rubidium

Q16) Elements in the same group have the same number of:

A) Protons

B) Neutrons

C) Electrons

D) Shells

Q17) The most reactive metals are found in which group of the periodic table?

A) Group 1

B) Group 2

C) Group 17

D) Group 18

Q18) Elements in the same group have similar:

A) Atomic numbers

B) Atomic masses

C) Chemical properties

D) Physical properties

Q19) Which of the following elements is a metalloid?

A) Sodium

B) Silicon

C) Chlorine

D) Xenon

Q20) Which element is located at the top of Group 1 (Group IA) in the periodic table?

A) Lithium

B) Sodium

C) Potassium

D) Rubidium