- Who developed the modern periodic table?
A) John Dalton
B) Dmitri Mendeleev
C) Henry Moseley
D) Rutherford
Answer: C) Henry Moseley - The modern periodic table is based on:
A) Atomic mass
B) Atomic number
C) Density
D) Valency
Answer: B) Atomic number - The number of periods in the periodic table is:
A) 5
B) 6
C) 7
D) 8
Answer: C) 7 - The number of groups in the periodic table is:
A) 16
B) 17
C) 18
D) 19
Answer: C) 18 - Elements in the same group have similar:
A) Mass
B) Physical state
C) Chemical properties
D) Atomic size
Answer: C) Chemical properties - Elements are arranged left to right in periods by increasing:
A) Atomic mass
B) Atomic number
C) Density
D) Size
Answer: B) Atomic number - The first element of the periodic table is:
A) Helium
B) Hydrogen
C) Lithium
D) Oxygen
Answer: B) Hydrogen - The last element in period 1 is:
A) Hydrogen
B) Helium
C) Neon
D) Argon
Answer: B) Helium - Group 1 elements are known as:
A) Alkaline earth metals
B) Halogens
C) Alkali metals
D) Noble gases
Answer: C) Alkali metals - Group 2 elements are called:
A) Alkali metals
B) Alkaline earth metals
C) Transition metals
D) Noble gases
Answer: B) Alkaline earth metals - Group 17 elements are called:
A) Noble gases
B) Halogens
C) Alkali metals
D) Lanthanides
Answer: B) Halogens - Group 18 elements are known as:
A) Halogens
B) Noble gases
C) Transition metals
D) Metalloids
Answer: B) Noble gases - Which group contains the most reactive metals?
A) Group 1
B) Group 2
C) Group 17
D) Group 18
Answer: A) Group 1 - Which group contains the most reactive non-metals?
A) Group 1
B) Group 17
C) Group 18
D) Group 2
Answer: B) Group 17 - Transition elements are found in:
A) s-block
B) p-block
C) d-block
D) f-block
Answer: C) d-block - Lanthanides and actinides belong to:
A) s-block
B) p-block
C) d-block
D) f-block
Answer: D) f-block - The atomic size decreases across a period because of:
A) Decrease in protons
B) Increase in electrons
C) Increase in nuclear charge
D) Decrease in shells
Answer: C) Increase in nuclear charge - Atomic size increases down a group due to:
A) Increase in shells
B) Decrease in protons
C) Increase in charge
D) Decrease in electrons
Answer: A) Increase in shells - Ionization energy generally increases across a period because:
A) Atomic size increases
B) Nuclear charge increases
C) Shielding increases
D) Valence electrons decrease
Answer: B) Nuclear charge increases - Ionization energy decreases down a group due to:
A) Decrease in atomic size
B) Increase in shielding effect
C) Increase in nuclear charge
D) Decrease in shells
Answer: B) Increase in shielding effect - Electronegativity increases across a period because:
A) Atoms become larger
B) Nuclear charge increases
C) Shielding decreases
D) Valence electrons decrease
Answer: B) Nuclear charge increases - Electronegativity decreases down a group due to:
A) Smaller size
B) Increased shielding
C) Less electrons
D) Higher nuclear charge
Answer: B) Increased shielding - Metals are located on which side of the periodic table?
A) Right
B) Left
C) Center
D) Bottom
Answer: B) Left - Non-metals are located on which side?
A) Left
B) Center
C) Right
D) Bottom
Answer: C) Right - Metalloids are found:
A) Left side
B) Right side
C) Along zig-zag line
D) Bottom
Answer: C) Along zig-zag line - Which element is a metalloid?
A) Sodium
B) Silicon
C) Chlorine
D) Helium
Answer: B) Silicon - Which element has the highest electronegativity?
A) Oxygen
B) Nitrogen
C) Fluorine
D) Chlorine
Answer: C) Fluorine - Which element has the largest atomic size?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
Answer: D) Rubidium - Noble gases are chemically:
A) Reactive
B) Inert
C) Metallic
D) Radioactive
Answer: B) Inert - The valency of Group 1 elements is:
A) 2
B) 1
C) 3
D) 0
Answer: B) 1 - The valency of Group 17 elements is:
A) 1
B) 2
C) 3
D) 7
Answer: A) 1 - The valency of noble gases is:
A) 1
B) 2
C) 3
D) 0
Answer: D) 0 - The element with atomic number 11 is:
A) Lithium
B) Sodium
C) Potassium
D) Magnesium
Answer: B) Sodium - Which element belongs to period 2?
A) Sodium
B) Magnesium
C) Carbon
D) Calcium
Answer: C) Carbon - Which element belongs to Group 2?
A) Sodium
B) Calcium
C) Chlorine
D) Neon
Answer: B) Calcium - The periodic table helps predict:
A) Color
B) Density
C) Properties of elements
D) Temperature
Answer: C) Properties of elements - Periodic law states that properties of elements are periodic function of:
A) Atomic mass
B) Atomic number
C) Density
D) Volume
Answer: B) Atomic number - Which block does helium belong to?
A) s-block
B) p-block
C) d-block
D) f-block
Answer: A) s-block - Which block contains most metals?
A) s-block
B) p-block
C) d-block
D) f-block
Answer: C) d-block - Which block contains halogens?
A) s-block
B) p-block
C) d-block
D) f-block
Answer: B) p-block - Which element is most reactive among halogens?
A) Chlorine
B) Bromine
C) Iodine
D) Fluorine
Answer: D) Fluorine - Which element has lowest ionization energy?
A) Helium
B) Neon
C) Sodium
D) Chlorine
Answer: C) Sodium - The number of elements in period 1 is:
A) 2
B) 8
C) 18
D) 32
Answer: A) 2 - The number of elements in period 2 is:
A) 2
B) 8
C) 18
D) 32
Answer: B) 8 - Which element is a noble gas?
A) Oxygen
B) Nitrogen
C) Neon
D) Fluorine
Answer: C) Neon - Which element is a halogen?
A) Sodium
B) Chlorine
C) Calcium
D) Helium
Answer: B) Chlorine - The periodic table is divided into:
A) Rows only
B) Columns only
C) Periods and groups
D) Blocks only
Answer: C) Periods and groups - Which group contains gases at room temperature?
A) Group 1
B) Group 2
C) Group 17
D) Group 18
Answer: D) Group 18 - Which element is most metallic?
A) Fluorine
B) Oxygen
C) Cesium
D) Neon
Answer: C) Cesium - Which element is least metallic?
A) Sodium
B) Calcium
C) Fluorine
D) Potassium
Answer: C) Fluorine
Pages: 1 2
1 thought on “Periodic Table MCQs”