Classification of Elements Quiz

What is the name of the scientist who is credited with the development of the periodic table?

• Isaac Newton

• Marie Curie

• Dmitri Mendeleev

• Albert Einstein

How many periods are there in the modern periodic table?

• 5

• 12

• 7

• 10

Which group of elements in the periodic table is known as the alkali metals?

• Group O

• Group IIA

• Group IA

• Group VIIA

In which block of the periodic table do the lanthanides and actinides appear?

• p-block

• f-block

• d-block

• s-block

Which type of elements tend to lose electrons and form positive ions?

• Noble gases and halogens

• Transition metals and metalloids

• Nonmetals and metalloids

• Alkali metals and alkaline earth metals

What is the reason for placing Hydrogen in the group of reactive metal?

• Hydrogen can lose an electron to form a positive ion

• Hydrogen does not react with other elements
• Hydrogen has a stable electron configuration
• Hydrogen is a noble gas

What happens to the reactivity of alkali metals as you move down the group in the periodic table?

• Reactivity increases

• Reactivity becomes unpredictable

• Reactivity remains the same

• Reactivity decreases

What is the trend in atomic size as you move from left to right across a period in the periodic table?

• Atomic size increases

• Atomic size decreases

• Atomic size remains constant

• Atomic size fluctuates

What is the electronic configuration of oxygen?

• 1s2 2s2 2p4

• 1s2 2s2 2p3

• 1s2 2s2 2p5

• 1s2 2s2 2p6

What is the electronic configuration?

• The process of transmitting data wirelessly
• The arrangement of protons and neutrons in the nucleus of an atom
• The process of converting physical documents into digital format
• Distribution of electrons in different energy levels.