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प्रश्न
______ group contains the member of the halogen family.
पर्याय
17th
15th
18th
16th
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उत्तर
17th group contains the member of the halogen family.
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संबंधित प्रश्न
The element which forms a basis oxide has the atomic number of:
(a) 18
(b) 17
(c) 14
(d) 19
The molecular formula of the chloride of element X is XCl. This compound is a solid having a high melting point. Which of the following elements be present in the same group as X.
In which block of the modern periodic table are the nonmetals found?
How did the early chemists classify elements?
Identify the bond between H and F in the HF molecules.
The atom of an element has electronic configuration 2, 8, 7. To which of the following elements would it be chemically similar?
Complete the following cross word puzzle
Across:
(1) An element with atomic number 12.
(3) Metal used in making cans and member of Group 14.
(4) A lustrous non-metal which has 7 electrons in its outermost shell.
Down:
(2) Highly reactive and soft metal which imparts yellow colour when subjected to flame and is kept in kerosene.
(5) The first element of second Period
(6) An element which is used in making fluorescent bulbs and is second member of Group 18 in the Modern Periodic Table
(7) A radioactive element which is the last member of halogen family.
(8) Metal which is an important constituent of steel and forms rust when exposed to moist air.
(9) The first metalloid in Modern Periodic Table whose fibres are used in making bullet-proof vests
Relate the names of the following scientists with the statements given below.
Arranged elements into groups containing three elements each.
How are elements grouped into various families in the periodic table?
The atomic number of an element 'X' is 11.
- Write the electronic configuration of X and find its valency.
- Write the formula and nature of its oxide.
