Which element has high value of electro negativity ?

Atomic size of lithium is ___________

Actinides are belonged to period:

Lanthanides series is started from the elements:

Normal elements are belonged to:

In which year Newland put forward his observation I the form of law of octaves?

When we move from left to right in a period atomic size is _____________

The distance between the Nuclei of two carbon atoms in its elements form is ___________

When we move from top to bottom in a group shielding effect is ____________.

Group-1 is also called:

Point out the incorrect statement about electron affinity

The ability of an atom to attract the shared pair of electrons toward, itself in a molecule is called:

Atomic number of actinium is:

Elements of group 13 to 18 have their valence electrons in sub shell.

Who are arranged the elements in groups of three

How many periods are present in the modern periodic table?

The horizontal lines present in the periodic table are called ________

The amount of energy released when an electron is added in the outermost shell of an isolated gaseous atom is called

Along the period, which one of the following decreases:

The unit of ionization energy is:

Elements of group 1 & 2 have their valence electrons in sub shell.

Element with Atomic no 58 to 71 are called:

The minimum amount o energy which is required to remove an electron from the gaseous state of an atom is called

Unit of electron affinity is ___________

Lanthanide is belonged to period:

1. Who determined the correct atomic masses of elements in 1860?

In Periodic Table, 2^nd & 3^rd period are called _______

When we move from left to right in a period shielding effect is ___________

In modern periodic table the elements in a group do not have continuously increasing

Actinide series is started from the elements:

How many elements present in 7^th period?

In which year Moseley described his periodic law?

Moseley arranged the elements in his periodic table on the basis of:

Which period of the modern periodic table is considered as incomplete period

When we move from left to right in a period ionization energy is ___________.

How many elements present in 4^th & 5^th Period?

In which year Mendeleev described his periodic law?

Transition elements are:

Which elements are present in 1st Group

The first ionization energy of sodium atom is ______

Period number tells about the:

When we move from top to bottom ionization energy __________ .

How many elements were present in Mendeleev’s periodic table?

Atomic size of Neon is ____________

How many elements present in 6^th period?

Mendeleev arranged elements in his periodic table on the basis of:

Who were trying to convert inferior metals to superior metals?

Which one of the following halogens has lowest electron-egativity?

All transition elements are belonged to:

How many groups are present in the modern periodic table?

How many elements present in 2^nd & 3^rd Period?

How many electrons present in the valence shell of group-1 elements?

Elements with atomic No 90 to 103 are called:

The vertical columns present in the periodic table are called __________

When we move left to right in a period atomic number _________

Group number tells about the:

The atomic radii of the elements in periodic table

In which century chemists devoted to arrange the elements in a systematic manner:

Which element are present in group-1?

Electron affinity of fluorine in kjmil-1 is

All transition elements are _________ .

Which elements are present in 2^nd period

The elements of a group show __________ properties:

The amount of energy given out when an electron is added to an atom is called ____________

How many elements block present in modern periodic table?

4^th and 5^th period of the long form of periodic table are called

Long form of periodic table is constructed on the bases of

Group-17 elements are known as:

The group-1 and group-2 and group-13 to group-17 contain the elements:

Mark the incorrect statement about ionization energy:

Elements of a period show properties?

Elements are classified into four blocks depending upon the type of the

Groups-17 elements contains electrons in their outer most shell:

The elements or group 3 to 12 are called:

How many elements present in 1^st period?

When we move from top to bottom in a group atomic size is __________.

Mendeleev’s periodic table was based upon the

Unit of atomic size is _________

With increase atomic number, the number of electrons in an atom also ______

Atomic number of lanthanum is: