WorksheetsLesson 2 End - 2nd Sec
Total questions: 16
Worksheet time: 1hrs 20mins
What is wrong with bohr model ?
He failed to explain Helium atom
Described the electron as a particle moving in a circular planar orbit
Determination both of the location and speed of an electron at the same time.
the electron as a negative charged particle with its wave properties.
which atom bohr couldn't make atomic spectrum for it
1H
2He+
3Li+2
4Be+2
Acc. To Dual Nature of Electron.... what is wrong in the following sentence
If a sufficient beam of electrons hit a small paper fan it will rotate
each electron has a specific wavelenght and frequency
electron has position and dimension
you can consider the electron as wave particle only
we can't detect the location and the speed of electron acc. to Hesinberg due to
the electron wave motion doesn't have a certain location.
the electron has dual nature.
electron is -ve charged particle only
Electron cloud is a region of
High Probability of finding electron
Probable of finding elecctron
No Probability of finding electron
Orbital is a region of
High Probability of finding electron
No Probability of finding electron
Probable of finding electron
on solving Schoridinger equation ?
Determine the allowed energy levels.
Define the regions of space around the nucleus, where it is most probable to find the electron in each energy level.
changed our concept about the movement of electron ... we can said electron cloud instead of orbit .
Schrödinger used the idea of
Max plank
Albert enistien
De brogile
Hesinberg
all the following
which model is the modern model
Which of these is a correct description of an atom?
An atom is a solid object and the smallest part of any material.
An atom is mostly space, with protons and electrons chasing each other around in orbits.
An atom is mostly space, with electrons orbiting a single nucleus containing protons and neutrons.
An atom is just a cloud of energy, containing no matter.
Hydrogen is
three dimensional coordinates
spherical shape
circular planar
Planar
In the Heisenberg uncertainty principle, which two measurable properties of a particle cannot be observed precisely at the same time?
Position and momentum
Spin and color
Niels Bohr used quantum mechanics to describe which element?
Hydrogen
Helium
Carbon
Zinc
He said all matter in motion has a wavelike nature.
Schrodinger
deBroglie
Thomson
Planck
His theory, simplified, was that the electrons in the atom move in precisely determined orbits.
Bohr
Schorindger
De brogile
aufbau
The equation which gives the mathematical apparatus for the description of quantum mechanical systems was formulated by, and is named after, which Austrian physicist?
Erwin Schrödinger
Bohr
