Course Code
chm101
Question
One half of the distance between the nuclei of two adjacent metal atoms in the close packed crystal lattice is called
Answer
Crystal or Metallic radius
Question
Half the distance between the nuclei of two atoms belonging to two adjacent molecules in a crystal lattice is called
Answer
Van der waals radius
Question
One half of the distance between the nuclei of two like atoms bonded together by a single covalent bond is called
Answer
Covalent radius
Question
Why do alkali metals not occur as free elements in nature?
Answer
Because they are highly reactive elements
Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2p_{x}^{2}\)?
Answer
Aufbau principle
Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2s^{2}2p_{x}^{2}2p_{y}^{1}\)?
Answer
Hund's rule
Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2s^{3}\)?
Answer
Pauli's Exclusion principle
Question
What is the electronic configuration of elements with atomic number 29?
Answer
\([Ar]3d^{10}4s^{1}\)
Question
What is the electronic configuration of elements with atomic number 24?
Answer
\([Ar]3d^{5}4s^{1}\)
Question
The electron affinity decreases down the group why?
Answer
down the group the size of the atom increases and effective nuclear charge remains almost steady
Question
One half of the distance between the nuclei of two adjacent metal atoms in the close packed crystal lattice is called
Answer
Crystal or Metallic radius
Question
Half the distance between the nuclei of two atoms belonging to two adjacent molecules in a crystal lattice is called
Answer
Van der waals radius
Question
One half of the distance between the nuclei of two like atoms bonded together by a single covalent bond is called
Answer
Covalent radius
Question
Why do alkali metals not occur as free elements in nature?
Answer
Because they are highly reactive elements
Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2p_{x}^{2}\)?
Answer
Aufbau principle
Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2s^{2}2p_{x}^{2}2p_{y}^{1}\)?
Answer
Hund's rule
Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2s^{3}\)?
Answer
Pauli's Exclusion principle
Question
What is the electronic configuration of elements with atomic number 29?
Answer
\([Ar]3d^{10}4s^{1}\)
Question
What is the electronic configuration of elements with atomic number 24?
Answer
\([Ar]3d^{5}4s^{1}\)
Question
The electron affinity decreases down the group why?
Answer
down the group the size of the atom increases and effective nuclear charge remains almost steady
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