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प्रश्न
An element which is an essential constituent of all organic compounds belongs to
पर्याय
group 1
group 14
group 15
group 16
उत्तर
group 15
Explanation -
An element which is an essential constituent of all organic compounds belongs to is carbon, it is located in the second period and group number 14 in the periodic table.
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संबंधित प्रश्न
Which of the following statement about the modern periodic table is correct?
(a) It has 18 horizontal rows known as periods.
(b) It has 7 vertical columns known as periods.
(c) It has 18 vertical columns known as groups.
(d) It has 7 horizontal rows known as groups.
Name the type of elements which have one electron short of octet.
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
Give the symbol and valency of the following element and radical.
Potassium
Group 13 to 18 : p block : : _______ : d block
Position of A, B and C three elements is given in the table from the modern periodic table. Answer the following questions.
| Periods | Group 2 | Group 17 |
| 2 | ----- | A |
| 3 | B | ----- |
| 4 | ----- | C |
- What is A element metal or nonmetal?
- Which is the outermost orbit of element B?
- Identify C element and it's physical state.
The inert gas which lies in the third period is ______
- Write the electronic configuration of element X, given by its symbol as under: \[\ce{^40_20 X}\]
- Determine its position in the modem periodic table.
- What is the nature of its oxide?
- Name one other element of its group.
State the group and period, of the element having three shells with three electrons in valence shell.
Give reason for the following:
Inert gases do not form ion.
