Question

(3) The element Unniltrium belongs to which block and group of
modem periodic table?
(a) d-block, group -10
(b) f-block, group-3
(c) p-block, group-13
id) d-block, group 11​

Answer 1

Answer:

The element Unniltrium belongs to the following block and group of

modem periodic table

(b) f-block, group-3

Explanation:

Lawrencium is the common name of Unniltrium which has atomic number 103.

Although it's position in modern periodic table is under review by IUPAC.

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Answer 2

The element ''Unniltrium'' belongs to f-block, group 3 of the 'modern periodic table'.

• We can derive the 'atomic number' of Unniltrium with the help of the name of the element. The part "Un" refers to 1, the part "nil" refers to 0, and the "trium" part refers to 3.
• So the 'atomic number' of Unniltrium is 103.
• Now we know that in the 'modern periodic table' the elements with an atomic number from 89 to 103, are in the f-group and group 3.
• So the element "Unniltrium" belongs to the f-block, group 3. So option b is correct.
• In option a, the elements in the d-block, group-10 are Nickel (Ni), Palladium (Pd), Platinum (Pt), and Darmstadtium (Ds). So option a is incorrect.
• In option c, the elements in p-block, group-13 are Boron (B), Aluminium (Al), Gallium (Ga), Indium (In), Thallium(Ti), and Nihonium (Nh). So option c is incorrect.
• In option d, the elements in d-block, group 11 are Copper (Cu), Silver (Ag), Gold (Au), and Copernicium (Cn). So option d is also incorrect.

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