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Rearrange the columns 2 and 3 so as to match with the column 1. Column 1 Column 2 Column 3 i. Triadii. Octaveiii. Atomic numberiv. Periodv. - Science and Technology 1

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प्रश्न

Rearrange the columns 2 and 3 so as to match with the column 1.

Column 1 Column 2 Column 3
i. Triad
ii. Octave
iii. Atomic number
iv. Period
v. Nucleus
vi. Electron
a. Lightest and negatively charged particle in all the atoms
b. Concentrated mass and positive charge
c. Average of the first and the third atomic mass
d. Properties of the eighth element similar to the first
e. Positive charge on the nucleus
f. Sequential change in molecular formulae
1.Mendeleev
2. Thomson
3. Newlands
4. Rutherford
5. Dobereiner
. Moseley
जोड़ियाँ मिलाइएँ

उत्तर

Column I
Column II
Column III
i. Triad c. Average of the first and the third atomic mass 5. Dobereiner
ii. Octave d. Properties of the eight-element similar to the first. 3. Newlands
iii. Atomic Number e. Positive charge on the nucleus. 6. Moseley
iv. Period f. Sequential change in molecular formulae 1. Mendeleev
v. Nucleus b. Concentrated mass and positive charge 4. Rutherford
vi. Electron a. Lightest and negatively charged particle in all the atoms 2. Thomson
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अध्याय 2: Periodic Classification of Element - Exercises [पृष्ठ २८]

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

संबंधित प्रश्न

Why do we classify elements?


The element which can from an acidic oxide should be the one whose atomic number is:

(a) 6
(b) 16
(c) 12
(d) 19


An element X is in group 2 of the periodic table what will be the formula of its oxide?


An element Y is in second period and group 16 of the periodic table:

(i) Is it a metal or non-metal?
(ii) What is the number of valence electrons in its atom?
(iii) What is its valency?
(iv) What is the name of the element?
(v) What will be the formula of the compound formed by Y with sodium?


An atom has the electron structure of 2, 7.
(a) What is the atomic number of this atom?
(b) To which of the following would it be chemically similar?
7N, 15P, 17Cl, 18Ar
(c) Why would you expect it to be similar?


A metal X is in the first group of the periodic table. What will be the formula of its oxide?


An element A from group 14 of the periodic table combines with an element B from group 16.

(i) What type of chemical bond is formed?
(ii) Give the formula of the compound formed.


Find the neutral atom in the periodic table which has the same number of electrons as K+ and Cl. What is this number?


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.


State whether true or false. If false, correct the statement.

Metals can gain electrons.


Which one of the following statements is not correct about the trends in the properties of the elements of a period on going from left to right?


Which of the following hydroxides is most basic?


In which group are inert elements placed?


Element ‘A’ has electronic configuration 2, 7; ‘B’ has electronic configuration 2, 8, 5 and ‘C’ has electronic configuration 2, 8, 7. Which two elements will exhibit similar chemical properties?


An element with the atomic number 40 is placed in the period.  


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

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


Relate the names of the following scientists with the statements given below.

Arranged elements in the increasing order of atomic mass.


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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