An electron is revolving round the nucleus of `He^(+)` ion with speed `2.2 xx 10^(6) m//s`. The potential energy of the electron is (if atomic number of `He = 2, 1 eV = 16 xx 10^(-19) J`. Mass of electron `= 9 xx 10^(-31) kg` )

An electron is revolving in an orbit of radius 2Å with a speed of 4 xx 10^(5) m//s . The angular momentum of the electron is [M_(e) 9=xx10^(-31) kg] .

The kinetic energy of an electron is 4.55 xx 10^(-25)J . Calculate the wavelength . [h = 6.6 xx 10^(-34)Js , mass of electron = 9.1 xx 10^(-31)kg]

An electron revolves around the nucleus of an atom in a circular orbit of radius 4 Å with a speed of 5xx 10^(6)m//s . What is the angular momentum of the electron ? [ m_(e) = 9 xx 10^(-31) kg ].

The speed of the electron in the hydrogen atom is approximately 2.2 xx 10^(6) m//s . What is the centripetal force acting on the electron ifthe radius of the circular orbit is 0.53 xx 10^(-10) m ?Mass of the electron is 9.1 xx 10^(-31) kg

The electron in the first orbit of hydrogen atom revolves round the nucleus in a circular orbit of radius 0.5 overset@A with a speed 2.18xx10^(6) m/s . What is the centripetal force acting on the electron ? (Mass of electron = 9.1xx10^(-31) kg).

Find the wavelength of an electron having kinetic energy 10 eV. (h = 6.33 xx 10^(-34) J.s, m_(e) = 9 xx 10^(-31) kg)

What is the number of electrons that would weight 1 kg? Mass of an electron is 9.11 xx 10^-31 kg .

An electron in an atom is revolving round the nucleus in a circular orbit of radius 5.3 xx 10^(-11) m, with a speed of 2 xx 10^(6) ms^(-1) . The resultant orbital magnetic moment and angular momentum of the electron is ...... Take charge of electron = 1.6 xx 10^(-19) C , mass of electron = 9.1 xx 10^(-31) kg.

In an atom , an electron is moving with a speed of 600 m/s with an accuracy of 0.05% . The certainty with which the position of the electron can be located is (h = 6.6 xx 10^(-34) kgm^(2)s^(-1) , mass of electron , e_(m) = 9.1 xx 10^(-31) kg ):