Nucleus of an atom consists of protons and neutrons closely packed into a small volume.
Explain how energy is released in a fission process.

Nucleus of an atom consists of protons and neutrons closely packed into a small volume. Nuclear fusion is the source of energyin stars. Write down the reactions involved in a proton proton cycle.

Nucleus of an atom consists of protons and neutrons closely packed into a small volume. How will relate the binding energy and stability of a nucleus?

Nucleus of an atom has 6 protons and 8 neutrons. What is its atomic number and mass number? What is this element?

The energy released during the addition of an electron to an isolated neutral atom is called electron gain enthalpy. a) Explain how electron gain enthalpy differ from electronegativity. b) The second ionisation enthalpy of an element is always greater than the first ionisation enthalpy. Give reason.

An atom or ion in an octahedral hole of a close packed structure has how many nearest neighbours?

For one-electron species, the wave number of radiation emitted during the transition of electron from a higher energy state (n_(2)) to a lower energy state (n_(1)) is given by: bar v =(1)/(lamda)=R_(H) xx Z^() ((1)/(n_(1)^(2)) (1)/(n_(2)^(2))) where R_(H)=(2 pi m_(s) k^(2) c^(4))/(h^(3) c) is Rydberg constant for hydrogen atom. Now, considering nuclear motion, the accurate measurement would be obtained by replacing mass of electron (m_(e)) by the reduced mass (mu) in the above expression, defined as mu =(m_(n)xx m_(e))/(m_(n) +m_(e)) where m_(n) = mass of nucleus. For Lyman series, n_(t) =1 (fixed for all the lines) while n_(2) = 2, 3, 4 .... For Balmer series: n_(1) = 2 (fixed for all the lines) while n_(2) = 3,4,5 .... If proton in hydrogen nucleus is replaced by a positron having the same mass as that of an electron but same charge as that of proton, then considering the nuclear motion, the wavenumber of the lowest energy transition of He+ ion in Lyman series will be equal to

Energy generation in stars is due to nuclear fusion. The energy released in nuclear fission process her with uranium is of the order of