Chemistry MCQ on Atomic Structure

The nature of positive rays depends on?

Quantum number value for 2p sub shell are?

when 6d orbital is complete, the entering electron goes into?

The heaviest particle among all the four given particles is?

Which of the following statement Is wrong about electron?

An element has 18 electrons, and 20 .neutrons. Its charge is —2. What is its mass number?

The nature of cathode rays were identified by?To

Neutron is a fundamental particle which carries?

Anode rays were discovered by?

Cathode rays are deflected by?

The mass of electron as determined by J.J. Thomson is?

When α — particles are sent through a thin metal foil, most of them go straight through the foil because?

The maximum number of. electrons that can be accommodated by p — orbital is?

Most penetrating radiation of radioactive element is:

No two electrons in the same atom can have identical set of four quantum numbers. This statement is known as?

The most electronegative element is?

Principle Quantum number describes?

Electromagnetic radiations produced from nuclear reactions are?

Atomic mass of an element is equal to the sum of?

Neutrons were discovered by?

The value of plank’s constant is?

P—Orbitals are ________ in shape?

The energy required to remove electron from an atom in gaseous state is called?

The energy released when an electron is added to an atom is the gaseous state is called?

The power of an atom to attract a shared pair of electron is called?

Electronegativity of fluorine is arbitrarily fixed as?

Lyman series of spectral lines appear in the ____ portion of spectrum.

Alpha-particles are fast moving

If a beam of sunlight is passing through the prism, then the type of spectrum obtained is?

The value of Redberg’s constant (RH) is?

According to Bohr’s Model, the radius of the second orbit is:

When the electrons is brought from infinity to the ground state of the hydrogen atom, then the energy is?

Balmer series lie in the ____ region of spectrum:

The value of Bohr radius for first orbit of H-atom is?

The radius of second Bohr orbit is?

The size of the shell Is determined by ____ quantum number.

When the azimuthal quantum number (L) is 3, than m can have?

The orbits having same energy are called?

The shape of an orbital is governed by?

Quantum number value of 2p orbitals are?

The value of magnetic quantum number of the last electron of Na is?

The nature of positive rays depends on?

Quantum number value for 2p sub shell are?

when 6d orbital is complete, the entering electron goes into?

The heaviest particle among all the four given particles is?

Which of the following statement Is wrong about electron?

An element has 18 electrons, and 20 .neutrons. Its charge is —2. What is its mass number?

Particles that most effects material properties

Mean distance between atoms in the range of

Which one of the following is not a strong bond?

Bond strength of secondary bonds is in the range of

Electron sea exists in

Atomic packing factor is

Coordination number in simple cubic crystal structure

The atomic diameter of an BCC crystal (if a is lattice parameter) is

Repeatable unit of polymers

Pick the thermo-plast from the following

Schottky-defect in ceramic material is

Miller indices for Octahedral plane in cubic crystal

A family of directions is represented by

Almost the entire mass of an atom is concentrated in the__________.

Electron was discovered by___________.

Carbon-12 atom has_______________.

The nucleus of an element contain 9 protons. Its valency would be

Energy of orbit.

The nucleus of helium contains

The number of electrons in one molecule of are.

Which of the following statements does not form part of Bohr’s model of the hydrogen atom.

The absolute charge of an electron is___________.

Cathode rays are deflected towards__________.

An atom has a mass number of 23 and atomic number 11. The number of protons are_________.

Compared to the charge and mass of a proton, an electron has…

When alpha particles are used to bombard gold foil, most of the alpha particles pass through undeflected. This result indicates that most of the volume of a gold atom consists of ____.

A proton has approximately the same mass as

When electrons in an atom in an excited state fall to lower energy levels, energy is

Any p-orbital can accommodate up to

the principal quantum number of an atom is related to the

correct set of four quantum numbers forhte valence (outmost) electron of rubidium 9Z = 37) is:

Bohr model can explain:

Which one of the following sets of quantum numbers(n,l,ml, ms) represents as impossible arrangement?