The valency of an element which belongs to 3rd period and 2nd group of periodic table is
A) 2
B) 3
C) 4
D) 5
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La belongs to group 3 while Hg belongs to group 12 and both belong to period 6 of the periodic table.
i. La and Hg both belongs to period 6. Therefore, n = 6. ii. Elements of group 3 to group 12 belong to the d-block of the modem periodic table. iii. The general outer...
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The elements present in 2nd period of long form of periodic table :
Correct option is B) 8
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Nitrogen is the element of group-VA of the periodic table. Which of the following is the atomic number of the next element in the group?
Correct option is C) 15
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The element belongs to 3rd period and 17th group is
Correct option is B) Cl
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The element with atomic number 13 belongs to ……………. period and …………….. group.
Here Correct :- A 3,13 Here is Simple 3 is a period which belong 13 group
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Group — Valency I group — i) +2 ,II group — ii) -1
B) a → iii, b → i, c → iv, d → ii
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If an element X belongs to II group and another element Y belongs to VII group then the compound formed between these elements has fomula :
Correct option is C) X Y2
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Carbon (Z=6) is the element of group-IVA of periodic table. Which of the following is the atomic number of next number in the group
Correct option is B) 14
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The combining capacity of atoms of an element with the atoms of other element is called its valency. Based on valency the odd one is
Correct option is C) Helium
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i. Shortest period in the modern periodic table. ii. Block which is placed separately at the bottom of the modern periodic table.
i. First period ii. f-Block
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