(a)
Interpretation: The following statement should be completed with proper term.
The number of protons and neutrons in an atom is the ________number.
Concept Introduction: Atom is the smallest unit of any chemical substance. It is a neutral entity with certain sub-atomic particles.
These sub-atomic particles maintain the neutrality of an atom and are arranged at a certain location.
(b)
Interpretation: The following statement should be completed with proper term.
The elements in Group 7 A(17) are called the ____________.
Concept Introduction: All know elements are placed in the periodic table. Elements are arranged in the increasing order of their atomic number.
On the basis of valence shell electronic configuration, periodic table can be classified as s, p,
(c)
Interpretation: The following statement should be completed with proper term.
Elements that are shiny and conduct heat are called _____________.
Concept Introduction: All know elements are placed in the periodic table. Elements are arranged in the increasing order of their atomic number.
On the basis of valence shell electronic configuration, periodic table can be classified as s, p, d and f-block elements.
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