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Questions and Answers
How is the Modern Periodic Table different from Mendeleev's Periodic Table?
How is the Modern Periodic Table different from Mendeleev's Periodic Table?
- It is based on atomic number instead of atomic mass. (correct)
- It arranges elements based on the number of electron orbits.
- It uses roman numerals and alphabets to classify elements.
- It groups elements based on their reactivity with water.
What is the significance of atomic number in the Periodic Table?
What is the significance of atomic number in the Periodic Table?
- It represents the number of electron shells in an atom.
- It indicates the number of protons in the nucleus of an atom. (correct)
- It reflects the reactivity of elements with oxygen.
- It determines the valency of elements in a group.
Which group in the Periodic Table consists of elements with limited reactivity?
Which group in the Periodic Table consists of elements with limited reactivity?
- Group 8A - Noble Gases (correct)
- Group 1A - Alkali Metals
- Group 7A - Halogens
- Group 2A - Alkaline Earth Metals
What do the Group 1A elements in the Periodic Table react with oxygen to form?
What do the Group 1A elements in the Periodic Table react with oxygen to form?
Which group of elements in the Periodic Table is known for compounds that are insoluble in water?
Which group of elements in the Periodic Table is known for compounds that are insoluble in water?
What does the term 'halogen' in Group 7A of the Periodic Table refer to?
What does the term 'halogen' in Group 7A of the Periodic Table refer to?
How are the representative or main group elements classified in the Periodic Table?
How are the representative or main group elements classified in the Periodic Table?
'Inner Transition Elements' in the Periodic Table are located where?
'Inner Transition Elements' in the Periodic Table are located where?
Which scientist is credited with the discovery of the concept of atomic number?
Which scientist is credited with the discovery of the concept of atomic number?
What was the basis of Mendeleev's Periodic Table?
What was the basis of Mendeleev's Periodic Table?
In Mendeleev's Periodic Table, how were elements arranged as they moved across the table?
In Mendeleev's Periodic Table, how were elements arranged as they moved across the table?
What does the Modern Periodic Table use as the basis for element arrangement?
What does the Modern Periodic Table use as the basis for element arrangement?
What term describes the number of electron shells (orbits) in an atom of an element?
What term describes the number of electron shells (orbits) in an atom of an element?
Which group of elements in the Periodic Table are known for compounds that are basic when dissolved in water?
Which group of elements in the Periodic Table are known for compounds that are basic when dissolved in water?
Which group of elements in the Periodic Table is referred to by the Greek word 'hal-' meaning 'salt' and '-gen' meaning 'to produce'?
Which group of elements in the Periodic Table is referred to by the Greek word 'hal-' meaning 'salt' and '-gen' meaning 'to produce'?
'Representative or Main Group Elements' in the Periodic Table are classified under which longer columns?
'Representative or Main Group Elements' in the Periodic Table are classified under which longer columns?
'Inner Transition Elements' in the Periodic Table are located where?
'Inner Transition Elements' in the Periodic Table are located where?
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