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Give example. Bivalent acidic radicals - Science and Technology

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प्रश्न

Give example.

Bivalent acidic radicals

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उत्तर

S2- ,O2- ,Se2-

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पाठ 4: Measurement of Matter - Exercise [पृष्ठ ५७]

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बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
पाठ 4 Measurement of Matter
Exercise | Q 1. e. | पृष्ठ ५७

संबंधित प्रश्‍न

What are polyatomic ions? Give examples.


Calculate the number of aluminium ions present in 0.051 g of aluminium oxide.

(Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u)


The valency of calcium is 2. Write the valencies of other radical in the following :

  1. CaO
  2. Ca(OH)2
  3. CaC03
  4. CaCl2

Write the names of `"HgO"` compounds :


Write the names of `"ZnCl"_2 ` compounds :


Magnesium and oxygen combine in the ratio of 3 : 2 by mass to form magnesium oxide. What mass of oxygen gas would be required to react completely with 24 g of magnesium ?


Define ‘formula mass’ of a compound.


Name the particle which has 18 electrons, 18 neutrons and 17 protons in it.


An element X has a valency of 2. Write the simplest formula for bromide of the element.


An element X has a valency of 2. Write the simplest formula for oxide of the element.


Give example.

Positive radicals


Write symbols of the following elements and the radicals obtained from them and indicate the charge on the radicals.

Mercury, potassium, nitrogen, copper, sulphur, carbon, chlorine, oxygen


Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.

Potassium ferrocyanide


Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.

Stannic oxide


Differentiate between the following with suitable examples- A basic radical and an acid radical


Fill in the blank:

A radical with one atom of sulphur and three atoms of oxygen are __________.


State if the following element or radical is divalent?

Lithium


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