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The molecular formula of the chloride of an 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. - Science and Technology 1

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प्रश्न

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.

विकल्प

  • Na

  • Mg

  • Al

  • Si

MCQ
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उत्तर

Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. An element to be present in the same group as X is Na.

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अध्याय 2: Periodic Classification of Element - Exercises [पृष्ठ २८]

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बालभारती Science and Technology 1 [English] Standard 10 Maharashtra State Board
अध्याय 2 Periodic Classification of Element
Exercises | Q 2.3 | पृष्ठ २८

संबंधित प्रश्न

The element which forms a basis oxide has the atomic number of:

(a) 18
(b) 17
(c) 14
(d) 19


The element X forms a compound X2Y. Suggest an element that Y might be and give reasons for your choice.


An element X from group 2 reacts with element Y from group 16 of the periodic table.
(a) What is the formula of the compound formed?
(b) What is the nature of bond in the compound formed?


The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols):

1             18
a 2 13 14 15 16 17  
    b         c
d           e  

(i) Select the letter which represents an alkali metal.
(ii) Select the letter which represents a nobles gas.
(iii) Select the letter which represents a halogen.
(iv) What type of bond is formed between a and e?
(v) What type  of bond is formed between d and e?


The non-metal A is an important constituent of our food and most of the fuels around us. A forms two oxides B and C. The oxide B is poisonous whereas oxide C causes global warming.

(a) Identify A, B and C.
(b) To which group of periodic table does A belong?
(c) Name another element which is placed in the  same group as A.


Elements belonging to the same group have the same valency.


If the distance between two Cl atoms in a Cl2 molecule is 1.98Å, then the radius of the Cl atom is ______.


Match the following

1. Galvanisation Noble gas elements
2. Calcination Coating with Zn
3. Redox reaction Silver-tin amalgam
4. Dental filling Alumino thermic process
5. Group 18 elements Heating in the absence of air

Identify the bond between H and F in the HF molecules.


An atom of an element has the electronic configuration 2,8,2. To which group does it belong? 


What is the atomic number of elements of period 3 and group 17 of the Periodic Table?


An element X from group 2 of the Periodic Table reacts with Y from group 17 to form a compound. Give the formula of the compound.


The atom of an element has electronic configuration 2, 8, 7. To which of the following elements would it be chemically similar?


Which one of the following does not increase while moving down the group of the periodic table?


An element X of group 15 exists as diatomic molecule and combines with hydrogen at 773 K in presence of the catalyst to form a compound, ammonia which has a characteristic pungent smell.

  1. Identify the element X. How many valence electrons does it have?
  2. Draw the electron dot structure of the diatomic molecule of X. What type of bond is formed in it?
  3. Draw the electron dot structure for ammonia and what type of bond is formed in it?

Which of the following metals have low melting and boiling point?


How are elements grouped into various families in the periodic table?


Identify the following:

An element in Period 1 which can be placed in both Group 1 and Group 17 of the Periodic Table.


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