electronic configuration set 1

Principle Quantum number gives idea about the following ?

• Determines the size & energy of orbital

• Identifies the shell

• Gives an idea about number of shell & electrons

• All of these

Values of Azimuthal Quantum number can be calculated by following formula

• 2n²

• 0 to (n – 1)

• –l   to  +l

• (2l + 1)

For l = 3, possible values of (m) are

• 7

• 6

• 5

• 4

Orientation of spin can be calculated by

• Principle Quantum Number

• Azimuthal Quantum Number

• Magnetic Quantum Number

• Spin Quantum Number

How many electrons can be accommodated in s – subshell

• 0

• 1

• 2

• 3

Number of electrons in s, p, d subshell respectively are

• 10, 6,

• 2, 14, 6

• 6, 10, 14

• 2, 6, 10

In 4d⁵ , d represents

• Shell

• Subshell

• Number of electrons

• None of these

Electronic configuration of boron (proton number: 5)

• 1s² 3s² 2p¹

• 1s² 2s² 2p¹

• 1s² 2s⁵ 2p¹

• 1s¹ 2s² 2p²

Electronic configuration of Neon (proton number: 10)

• 1s¹ 2s² 2p⁷

• 2s² 2p² 2p⁶

• 1s⁴ 2s⁴ 2p²

• 1s² 2s² 2p⁶

When several orbital's of equal energy are available, the electron first fills singly before pairing in any orbital's, this statement was given by

• Hund’s Rule

• Pauli’s Excusive Principle

• Aufbau Principle

• None of these