What are inner transition elements? why are they so called ? How many series of inner transition elements are present in the modern periodic table? Write their names and atomic number. which of these two series contains only radioactive elements? Name any three radioactive elements which are used in atomic bombs.
Class - 10th
Chapter - Periodic classification of elements.
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Answers
What are inner transition elements?
The transition elements are in the d-block, and in the d-orbital have valence electrons. They can form several states of oxidation and contain different ions. Inner transition elements are in the f-block, and in the f-orbital have valence electrons. They are the Lanthanides, and the Actinides.
why are they so called
The transition metals were given their name because they had a place between Group 2A (now Group 2) and Group 3A (now Group 13) in the main group elements. Therefore, in order to get from calcium to gallium in the Periodic Table, you had to transition your way through the first row of the d block (Sc → Zn).
transition elements..
List of Elements That Are Transition Metals
Scandium
Titanium
Vanadium
Chromium
Manganese
Iron
Cobalt
Nickel
Copper
Zinc
Yttrium
Zirconium
Niobium
Molybdenum
Technetium
Ruthenium
Rhodium
Palladium
Silver
Cadmium
Lanthanum, sometimes (often considered a rare earth, lanthanide)
Hafnium
Tantalum
Tungsten
Rhenium
Osmium
Iridium
Platinum
Gold
Mercury
Actinium, sometimes (often considered a rare earth, actinide)
Rutherfordium
Dubnium
Seaborgium
Bohrium
Hassium
Meitnerium
Darmstadtium
Roentgenium
Copernicium presumably is a transition metal.
which of these two series contains only radioactive elements?
The first main transition series begins with either scandium (symbol Sc, atomic number 21) or titanium (symbol Ti, atomic number 22) and ends with zinc (symbol Zn, atomic number 30). The second series includes the elements yttrium (symbol Y, atomic number 39) to cadmium (symbol Cd, atomic number 48).
Name any three radioactive elements which are used in atomic bombs.
The most commonly used fissile materials for nuclear weapons applications have been uranium-235 and plutonium-239. Less commonly used has been uranium-233.
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What are inner transition elements?
Inner transition metals comprises of two series. Their series is usually shown at the bottom of the periodic table in separated islands.
Why are they called so?
They are very heavy metals that is why they are called transition elements.
How many series of series of transition elements are present?
There are two series of inner transition elements usually known as Lanthanide and actinide series.
Write their names and atomic numbers.
This is Lanthanide series Lanthanum(La) 57
- Cerium(Ce) 58
- Praseodymium(Pr) 59
- Neodymium(Nd) 60
- Promethium(Pm) 61
- Samarium(Sm) 62
- Europium(Eu) 63
- Gadolinium(Gd) 64
- Terbium(Tb) 65
- Dysprosium(Dy) 66
- Holmium(Ho) 67
- Erbium(Er) 68
- Thulium(Tm) 69
- Yetterbium (Yb) 70
- Lutetium(Lu) 71
This is Actinide series
- Actinium(Ac) 89
- Thorium(Th) 90
- Protactium(Pa) 91
- Uranium(U) 92
- Neptunium(Np) 93
- Plutonium(Pu) 94
- Americium(Am) 95
- Curium(Cm) 96
- Berkelium(Bk) 97
- Californium(Cf) 98
- Einsteinium(Es) 99
- Fermium(Fm) 100
- Mendelivium(Md) 101
- Nobelium(No) 102
- Lawrencium(Lr) 103
Which of these two series contain radioactive elements only?
Only actinide series contains radioactive elements.
Three radioactive elements used in Atomic bombs.
Uranium-235 , Plutonium-239 and Uranium-232 are used in Atomic bombs.