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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

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.

पर्याय

  • Na

  • Mg

  • Al

  • Si

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

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

संबंधित प्रश्‍न

An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting.

(a) How many electrons would be there in the outermost shell of the element X?
(b) To which group of the periodic tables does the element X belong?
(c) Write the formula of the compound formed when X reacts with chlorine.


An element X from group 2 of the periodic table reacts with an element Y from group 17 to form a compound.

(a) What is the nature of the compound formed?
(b) State whether the compound formed will conduct electricity or not.
(c) Give the formula of the compound formed.
(d) What is the valency of element X?
(e) How many electrons are there in the outermost shell of an atom of element Y?


An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a compound.

(a) Write the position of these elements in the modern periodic table.

(b) Write the formula of the compound formed.

Justify your answer in each case.


The elements Li, Na and K, each having one valence electron, are in period 2, 3 and 4 respectively of modern periodic table.

(i) In which group of the periodic table should they be ?

(ii) Which one of them is least reactive ?

(iii) Which one of them has the largest atomic radius ? Give reason in justify your answer in each case.


Choose the correct option and rewrite the statement.
The number of electrons in the outermost shell of alkali metals is _______.


Alkaline earth metals have valency 2. This means that their position in the modern periodic table is in ______.


In which block of the modern periodic table are the nonmetals found?


How did the early chemists classify elements?


Elements belonging to the same group have the same valency.


Write the name.

The atom having smallest atomic radius from group 1.


The number of periods and groups in the periodic table are ______


Moseley’s periodic table is based on atomic mass.


The elements A, B, and C belong to groups 1, 14, and 17 respectively of the Periodic Table. Which two elements will form ionic compounds?


Which one of the following statements is not correct about the trends in the properties of the elements of a group on going down in a group?


Which of the following is a transition element?


Which of the following property will be common in group 1 elements?


Arrange the following elements in the order of their decreasing metallic character

Na, Si, Cl, Mg, Al


Identify and name the metals out of the following elements whose electronic configurations are given below.

  1.  2, 8, 2
  2. 2, 8, 1
  3. 2, 8, 7
  4. 2, 1

The atomic number of an element 'X' is 11.

  1. Write the electronic configuration of X and find its valency.
  2. Write the formula and nature of its oxide.

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