Describe the theory associated with the radius of an atom as it
(1) gains an electron
(2) Loses an electron.

If an atom gains electron what charge it acquires?

The electron affinity of an atom

Describe Dalton's Atomic Theory.

Statement I: The distance of the electron from the nucleus is minimum when a hydrogen atom is in ground state. Statement II: According to Bohr's theory the radius of circular motion of an electron in n-th energy state, r_n prop n .

Fill in the blanks: - When an atom gains or loses an electron, an __________ is formed.

According to Bohr's theory mention the expressions of the following parameters for hydrogen atom: (i) radius of Bohr orbit, (ii) velocity of electron , (iii) orbital frequency of electron, (iv) angular momentum of electron, (v) kinetic energy of electron (iv) potential energy of electron.

Which element has the greatest tendency to lose electrons?

When a Helium atom loses all of its electron, then it is called

Electron transport chain is associated with

(1) The energy associated with the first orbit in the hydrogen atom is -2.18xx10^(-18)J*"atom"^(-1) . What is the energy associated with the fifth orbit? (2) Calculate the radius of Bohr's fifth orbit for hydrogen atom.