Quiz 1 Transition Elements

The number of unpaired electrons in silver

• 1

• 2

• 3

• 4

Which of the following cannot be prepared by normal chemical methods?

• KMnO₄

• Cr₂O₃

• TiO₃

• VF₅

In period 5 there are …………..transition metals

• 5

• 6

• 9

• 10

The main transition element consists of 10 vertical columns the electronic configuration of the column before the last one is

• (n-1)d¹ ns¹

• (n-2)d¹ ns¹

• (n-1)d¹⁰ ns¹

• (n-1)d⁹ ns²

The electronic configuration of iron in FeCl₃ is

• 4s² 3d⁶

• 4s¹ 3d⁵

• 4s⁰ 3d⁵

• 4s⁰ 3d⁶

The transitional element in which sub-level(d)is filled before the sub- level(s) is ………

• Cobalt

• Carbon

• Chromium

• Silver

Which statement is correct

• Difficult to change from Mn III to Mn II

• Nickel has 5 unstable isotopes

• Easy to change from Iron III to iron II

• The maximum oxidation state of Zr is 4

The magnetic moment of Vanadium in VO

• 2

• 3

• 4

• 5

Which statement is correct

• Chromium has 5 unpaired electrons

• Scandium can't form paramagnetic compounds

• The radius of copper is less than the radius of chromium

• The properties of iron is similar to Zn

The atomic number of element B is twice the atomic number of element A and the second ionization potential of element A causes breaking a complete energy level so element B is .....

• Titanium

• Chromium

• Iron

• zinc