Memory

In the periodic table from left to right in a period,the atomic volume

Options

(a) Decreases (b) Increases (c) Remains same (d) First decrease then increases

Correct Answer:

First decrease then increases

Explanation: […]

As we go from left to right in a period of the periodic table, gram atomic volume of the elements

Options

(a) will change indefinitely (b) decreases (c) increase at a constant rate […]

If the atomic number of an element is 33, it will be placed in the periodic table in the

Options

(a) First group (b) Third group (c) Fifth group (d) Seventh group

Correct […]

An atom has electronic configuration 1s²2s²2p⁶3s²3p⁶3d³4s², you will place it in which group?

Options

(a) Fifth (b) Fifteenth (c) Second (d) Third

Correct Answer:

Fifth

Explanation:

The electronic configuration clearly suggest that it […]

Among K, Ca,Fe and Zn the element which can form more than one binary compound with chlorine is

Options

(a) Fe (b) Zn (c) K (d) Ca

Correct Answer:

Fe

Explanation:

Among the […]

Which one of the following orders is not in accordances with the property stated against it?

Options

(a) F₂ > Cl₂ > Br₂ > I₂ : Oxidising power (b) HI > HBr > […]

For electron affinity of halogens, which of the following is correct?

Options

(a) Br > F (b) F > Cl (c) Br > Cl (d) F > I

Correct Answer:

F > I

[…]

Which of these have no unit?

Options

(a) Electronegativity (b) Electron affinity (c) Ionisation energy (d) All of these

Correct Answer:

Electronegativity

Explanation:

Electronegativity is unit less quality. Pauling scaleand Mulliken scale are […]