Along the period, which one of the following decreases:

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

Long form of periodic table is constructed on the bases of

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

How many elements present in 6^th period?

In which year Moseley described his periodic law?

Lanthanides series is started from the elements:

Lanthanide is belonged to period:

Atomic size of lithium is ___________

How many elements present in 1^st period?

Unit of atomic size is _________

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

When we move from top to bottom ionization energy __________ .

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

The vertical columns present in the periodic table are called __________

In which year Mendeleev described his periodic law?

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

Elements with atomic No 90 to 103 are called:

Which elements are present in 2^nd period

Mark the incorrect statement about ionization energy:

Atomic number of lanthanum is:

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

Period number tells about the:

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

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

Point out the incorrect statement about electron affinity

Electron affinity of fluorine in kjmil-1 is

Transition elements are:

Group number tells about the:

Actinides are belonged to period:

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

Mendeleev’s periodic table was based upon the

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

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

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

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

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

Atomic size of Neon is ____________

How many periods are present in the modern periodic table?

Which element are present in group-1?

Normal elements are belonged to:

The atomic radii of the elements in periodic table

Actinide series is started from the elements:

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

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

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

The first ionization energy of sodium atom is ______

The horizontal lines present in the periodic table are called ________

All transition elements are _________ .

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

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

Group-17 elements are known as:

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

Who were trying to convert inferior metals to superior metals?

Group-1 is also called:

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

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

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

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

Which element has high value of electro negativity ?

The elements or group 3 to 12 are called:

Which elements are present in 1st Group

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

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

The elements of a group show __________ properties:

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

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

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

Element with Atomic no 58 to 71 are called:

How many groups are present in the modern periodic table?

The unit of ionization energy is:

How many elements block present in modern periodic table?

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

Atomic number of actinium is:

Elements of a period show properties?

How many elements present in 7^th period?

Unit of electron affinity is ___________

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

Who are arranged the elements in groups of three

All transition elements are belonged to: