Electron | MCQs

Explanation

The L shell, also known as the second electron shell, has 02 subshells:

The L shell contains two subshells - 2s, 2p.

The M shell contains three subshells - 3s, 3p, 3d.

The N shell contains four subshells - 4s, 4p, 4d, 4f

Explanation

• Electronic configuration refers to the distribution of electrons within an atom or molecule.
• It shows how the electrons are arranged in different energy levels (shells) and sublevels (orbitals) around the nucleus.

Explanation

• The atomic number 19 corresponds to the element Potassium (K).
• The electron configuration of Potassium is: 1s² 2s² 2p⁶ 3s¹
• Which can be simplified to: 2, 8, 8, 1.

Explanation

• The loss of electrons and protons (H+ ions) is called oxidation.
• Oxidation is a chemical reaction that involves the loss of electrons or the addition of oxygen.
• Resulting in a change in the oxidation state of an atom, molecule, or ion.

Explanation

• The high resolution of the electron microscope is primarily due to the short wavelength of the electron beam.
• This shorter wavelength allows for higher resolution and the ability to visualize smaller structures.

Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)

Explanation

The basic digital electronic circuit that has one or more inputs and single output is known as Logic gate. 

Explanation

A computer is a complex system; contemporary computers contain millions of elementary electronic components.

Explanation

• Silicon is an example of a Semiconductor.
• Semiconductors like silicon have electrical conductivity between conductors and insulators.
• It enabling them to control electrical current flow in devices and integrated circuits.

Explanation

• The unit of electric resistance is Ohms (Ω).
• Ohms measure the opposition to the flow of electric current.
• It represented by the symbol "R" in equations, such as R=V/I.