Adding common ion to a solution

The rotational spectrum of molecules arises because of

Identify the element which shows variable valency.

Which of the following states of matter has the weakest Intermolecular forces?

The force of attraction among the molecules are very high in which form of matter

Bosons which carry electromagnetic force is

Boson which carry strong nuclear force is

In which form particle has a definite volume and having no definite shape

The particle which gives the property of mass to the matter

Bosons which carry weak nuclear force is

The term Quark was coined by

99% of matter in the Universe is in which form?

Matter exists at ultra high temperature on which form?

The term ‘Boson’ was first coined by

The pure Bose- Einstein was first created by Eric Cornell and ----

International year of Chemistry was celebrated in

The term Element was coined by?

Father of Modern chemistry?

An atom has a mass number of 23 and atomic number 11. How many neutrons does it have?

The element used to find Atomic mass unit?

International mole day

How many atoms are present in one molecule of Ozone?

The term ‘molecule’ was coined by

The unit of measuring mass of an atom?

Uncertainity principle was put forward by:

Valency of Noble gases is:

Scientist who found that electrons move around nucleus in shell?

Law of multiple proportion was put forward by

The number of neutrons in an atom of Hydrogen is

The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon?

What is the value of charge of an Electron?

What is the number of valence electrons of Aluminium?

What is the mass number of an element, the atom of which contains two protons, two neutrons and two electrons?

Who discovered the exact charge of electron?

Plum Pudding Model of the Atom was proposed by:

The maximum number of electrons in N shell is :

The outermost shell electronic configuration of an element  4s2 4p3 .To which period of the periodic table does this element belong to?

The person behind the invention of positron

What would be the atomic number of the element in whose atom the K and L shells are full?

The atomic nucleus was discovered by:

Maximum number of Electrons that can be accommodated in P orbital

Nucleus of an atom contains:

How many valence electrons does an oxygen atom have

The maximum number of electrons in a shell?

The name electron was proposed by

Lightest sub atomic particle is

Name the scientist who suggested the theory of dual nature of matter?

The theory that the electrons revolve around the nucleus in circular paths called orbits was propounded by ______

The elements having same atomic number but different mass numbers are called ______

The correct electronic configuration of sodium is: