Elements with atomic No 90 to 103 are called:

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

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

When we move from top to bottom ionization energy __________ .

Mendeleev’s periodic table was based upon the

Which elements are present in 1st Group

How many groups are present in the modern periodic table?

Electron affinity of fluorine in kjmil-1 is

The first ionization energy of sodium atom is ______

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

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

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

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

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

Along the period, which one of the following decreases:

Mark the incorrect statement about ionization energy:

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

Unit of atomic size is _________

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

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

Atomic size of lithium is ___________

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

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

Lanthanides series is started from the elements:

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

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

How many elements present in 6^th period?

Long form of periodic table is constructed on the bases of

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

Unit of electron affinity is ___________

The unit of ionization energy is:

Group-17 elements are known as:

Atomic number of lanthanum is:

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

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

How many periods are present in the modern periodic table?

All transition elements are belonged to:

Which element has high value of electro negativity ?

In which year Moseley described his periodic law?

In which year Mendeleev described his periodic law?

Group-1 is also called:

Group number tells about the:

How many elements block present in modern periodic table?

The elements or group 3 to 12 are called:

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

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

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

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

Who were trying to convert inferior metals to superior metals?

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

Elements of a period show properties?

The vertical columns present in the periodic table are called __________

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

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

Element with Atomic no 58 to 71 are called:

Point out the incorrect statement about electron affinity

Actinides are belonged to period:

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

The horizontal lines present in the periodic table are called ________

All transition elements are _________ .

Lanthanide is belonged to period:

How many elements present in 1^st period?

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

Period number tells about the:

Atomic number of actinium is:

Atomic size of Neon is ____________

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

Transition elements are:

Which elements are present in 2^nd period

The atomic radii of the elements in periodic table

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

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

Actinide series is started from the elements:

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

How many elements present in 7^th period?

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

Normal elements are belonged to:

Which element are present in group-1?

Who are arranged the elements in groups of three

The elements of a group show __________ properties: