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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (मराठी सेमी-इंग्रजी) इयत्ता ९ वी

Give example. Basic radicals

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प्रश्न

Give example.

Basic radicals

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उत्तर

Mg2+, K+, Fe2+, Cu2+

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

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

संबंधित प्रश्‍न

How many atoms are present in a PO43− ion?


Write the names of ZnS compounds :


Tick (√) the correct answer.

The sulphate radical is written as S042-. What is the formula of calcium sulphate ?


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.


Fill in the following blank with suitable word:

The particle which is formed by the loss or gain of electrons by an atom is called..............


Fill in the following blank with suitable word:

A sulphide ion has negative charge because it contains less ....................... than ...................


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.

Calcium silicate


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

Sodium zincate


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

Sodium thiosulphate


Name the following radicals and give their valencies:

1. SO4
2. CO3
3. OH4.
4.Cr2O7


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 __________.


Name the following:

The radical containing one nitrogen and four hydrogen atoms.


State if the following element or radical is divalent?

Bromide


State if the following element or radical is divalent?

Chromium


State if the following element or radical is divalent?

Dichromate


Match the names of ions and radicals from 1 to 10 with their correct answer from A to Q.

Column A Column B
1. Hypochlorite A: Hg2+
2. Permanganate B: \[\ce{MnO_4^1-}\]
3. Plumbous C: Sn4+
4. Zincate D: Pb2+
5. Nitride E: Sn2+
6. Mercuric F: Pb4+
7. Stannic G: \[\ce{SO_3^2-}\]
8. Nitrite H: N3-
9. Sulphite I: \[\ce{NO_2^1-}\]
10. Dichromate J: \[\ce{MnO_4^2-}\]
  K: Hg1+
L: \[\ce{SO_4^2-}\]
M: CIO1-
N: \[\ce{ZnO_2^2-}\]
O: \[\ce{Cr_2O_7^2-}\]
P: \[\ce{CrO_4^2-}\]
Q: \[\ce{ClO_3^1-}\]

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