Q: Who is the father of the modern periodic table
A: Dmitri Mendeleev
Q: Who first classified chemical elements
A: Johann Wolfgang Dobereiner
Q: What does the modern periodic law state
A: Properties of elements are periodic functions of their atomic numbers
Q: How are elements arranged in the modern periodic table
A: By increasing atomic number
Q: How many periods are in the periodic table
A: 7
Q: How many groups are in the periodic table
A: 18
Q: What are vertical columns called
A: Groups
Q: What are horizontal rows called
A: Periods
Q: Which element has atomic number 1
A: Hydrogen
Q: Which is the first element in the periodic table
A: Hydrogen
Q: Which group contains noble gases
A: Group 18
Q: What are Group 1 elements called
A: Alkali metals
Q: What are Group 2 elements called
A: Alkaline earth metals
Q: What are Group 17 elements called
A: Halogens
Q: How many valence electrons do halogens have
A: 7
Q: What is the valency of halogens
A: 1
Q: Which group contains the most reactive nonmetals
A: Group 17
Q: Which period contains the most elements
A: 6th period
Q: Which is the smallest period
A: 1st period
Q: Which is the last element in the modern periodic table
A: Oganesson
Q: How many elements are in the modern periodic table
A: 118
Q: Which metal is liquid at room temperature
A: Mercury
Q: Which nonmetal is liquid at room temperature
A: Bromine
Q: Which is the lightest metal
A: Lithium
Q: Which element is called the fuel of the future
A: Hydrogen
Q: Which is the heaviest naturally occurring element
A: Uranium
Q: Which element has the highest electronegativity
A: Fluorine
Q: Which element has the lowest electronegativity
A: Cesium
Q: Which element is essential for respiration
A: Oxygen
Q: Which metal is present in blood
A: Iron
Q: Which gas is used in balloons
A: Helium
Q: Which element is found in diamonds
A: Carbon
Q: Which noble gas is used in sign boards
A: Neon
Q: Which is the hardest naturally occurring substance
A: Carbon in diamond form
Q: Which is the most reactive metal
A: Francium
Q: Which is the most reactive nonmetal
A: Fluorine
Q: Name a nonmetal with lustre
A: Iodine
Q: Which gas is used in welding
A: Argon
Q: Which noble gas is most abundant in the atmosphere
A: Argon
Q: How many valence electrons do noble gases have
A: 8 except helium
Q: Which actinide is used as nuclear fuel
A: Uranium
Q: Which lanthanide is used in colour televisions
A: Europium
Q: What is the atomic number of sodium
A: 11
Q: Which element is called white gold
A: Platinum
Q: Which element is also called black lead
A: Graphite
Q: Name a radioactive element found in India
A: Thorium
Q: Which element has the highest ionization energy
A: Helium
Q: Which man-made actinide is used in atomic bombs
A: Plutonium
Q: Which element is widely used in batteries
A: Lithium
Q: Which element is used in antiseptics
A: Iodine
Q: Which element is essential for fertilizers
A: Nitrogen
Q: Which metal is used in aircraft construction
A: Aluminum
Q: Which metal is used for galvanization
A: Zinc
Q: Which element is used in semiconductors
A: Silicon
Q: Which nonmetal conducts electricity
A: Graphite
Q: Which is the densest noble gas
A: Radon
Q: What is the atomic number of silicon
A: 14
Q: What is the atomic number of oxygen
A: 8