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Questions (19)
In the Sun, an ionized helium atom makes a transition from n =6 state to the n = 2 state, emitting a photon. Can that photon be
4 answers
3,068 views
Explain what ideas led Bohr to suggest a new atomic model; and state Bohr postulates. Explain also, in words, what the
1 answer
482 views
Evaluate the Rydberg constant R using Bohr theory and show that its value is R = 1.0974x10-1.
1 answer
350 views
Calculate the ionization energy of doubly ionized Lithium, which has Z=3. Construct also the energy level diagram for it.
1 answer
592 views
The third longest wavelength in the Paschen series in hydrogen corresponds to what transitions?
1 answer
1,015 views
A monochromatic light beam with energy 204eV is used to excite the Be+3 (H –like atom with Z=4) from its ground state to some
2 answers
922 views
Hydrogen atom is initially in the ground state. It is excited by a photon bombardment and it then undergoes a transition from n
1 answer
816 views
Consider a triangular pulse having a wave function
(1)0()(1)00xNforbxbxxNforxbbforelsewhere�
1 answer
329 views
until recently, many scientists were tentative in their acceptance for the theory of the chemical evolution of life on earth.
1 answer
495 views
which hemisphere of the earth contains the greater proportion of ocean surface?
1 answer
354 views
who would be considered to be the "first ocean scientist"?
1 answer
288 views
how do geologists know the earth is layered inside?
1 answer
340 views
what do these things have in common: paleomagnetism, seafloor spreading, pangaea, transform faults, fracture zones, seamount
2 answers
544 views
where are the youngest seafloor rocks found?
1 answer
309 views
what is the force driving the crustal plates?
1 answer
288 views
what are some characteristics that describe subduction zones?
1 answer
300 views
roughly how fast do most lithospheric plates move?
1 answer
474 views
what is the transition between the shelf and the deep seafloor called?
2 answers
535 views
where are the deepest parts of the pacific basin located?
2 answers
517 views
Answers (5)
thx so much 100%
thx so much Ninaaa you really helped
cdcb
for real i think its 7.4 but im not sure
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