quiz (3) lesson 1

The oxidation state … of VB elements causes a completely filled sublevel of a noble gas

• 4+

• 5+

• 6+

• 7+

1. 3 types of titanium chlorides found in the following reaction, the most stable one is … 2TiCl₃ =TiCl₂ + TiCl₄

• TiCl₃

• TiCl₂

• TiCl₄

• TiCl₃, TiCl₂

The highest oxidation state of manganese is found in …

• MnO₃

• MnO₂

• KMnO₄

• K₂MnO₄

What is the choice that represents the two compounds in which manganese has the same oxidation state?

• Mn₂O₃ and Mn(SO₄)₂

• MnO₂ and MnCl₂

• KMnO₄ and MnO₃I

• K₂MnO₄ and KMnO₄

The following compounds can act as oxidizing agent as well as reducing agents in chemical reactions except …

• FeO

• MnO

• Sc₂O₃

• CrO

When sulphate ion combine with … it gives a compound is used in purification of drinking water

• Titanium

• Chromium

• Copper

• Zinc

Which of the following has anomalous electronic configuration?

• ₃₀Zn

• ₄₂Mo

• ₄₈Cd

• ₇₇Lr

Which of the following elements prefers to form this oxide (XO₃)

• Vanadium

• Chromium

• Manganese

• Copper

In all the institutes and the hospitals of cancer treatment, there are machines known as 

• Cobalt machines

• Nickel machines

• Uranium machines

• Radium machines

The biggest no. of unpaired electrons in an element is located in group …

• IIIB

• VIB

• VB

• VIIB