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