Chemistry Question Bank

When a chlorine atom becomes chloride ion, its size

The number of elements present in fifth period of Periodic Table is

Which of the following pairs has almost the same atomic radii?

The last element of the p-block in the 6th period is represented by the outermost electronic configuration.

The electronic configuration of the element which is just above the element with atomic number 43 in the same group is ............

The element with atomic number 57 belongs to

The element with the lowest atomic number that has a ground state electronic configuration of (n-1) d6ns2 is located in the

Identify the correct order of the size of the following

The elements with atomic numbers 9, 17, 35, 53, 85 are all

Molybdenum metal is related to which block?

The transition elements have a characteristic electronic configuration which can be represented as

Which one of the following pair of elements has similar properties?

Which of the following is not a Dobereiner’s triad?

Elements whose outer electronic configuration vary from ns2np1 to ns2np6 constitute

ns and ns outermost electronic configuration belongs to the

Which one of the following ions has the highest value of ionic radius?

The correct order of second ionization potential of C, N, O and F is

Which of the following isoelectronic ions has the lowest ionization energy?

Which of these have no unit?

Identify the incorrect match. (NEET 2020) Name IUPAC Official Name

Assertion: Electron gain enthalpy becomes less negative as we go down a group. Reason: The size of the atom increases on going down the group and the added electron would be farther from the nucleus.

Assertion: Generally, ionization enthalpy increases from left to right in a period. Reason: When successive electrons are added to the orbitals in the same principal quantum level, the shielding effect of the inner co…

The element with highest I.E. is:

The element with lowest electron gain enthalpy is:

The most ionic compound will be formed between: