हिंदी

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

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प्रश्न

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

संक्षेप में उत्तर
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उत्तर

sr. no.

Element

Symbols Free radicals charge on the radicals
i. Mercury Hg Hg+ +1
Hg2+ +2
ii. Potassium K K+ +1
iii. Nitrogen N N3- -3
iv. Copper Cu Cu+ +1
Cu2+ +2
v. Sulphur S S2- -2
vi. Carbon C C+ +1

vii.

Chlorine

Cl Cl- -1
viii. Oxygen O O2- -2
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अध्याय 4: Measurement of Matter - Exercise [पृष्ठ ५७]

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बालभारती Science and Technology [English] Standard 9 Maharashtra State
अध्याय 4 Measurement of Matter
Exercise | Q 2. | पृष्ठ ५७

संबंधित प्रश्न

How many atoms are present in a PO43− ion?


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)


Write the names of `"CuCo"_3` compounds :


Write the names of `"HgO"` compounds :


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


Fill in the following blank with suitable word:

A potassium ion has positive charge because it contains less............... than.....................


Explain the formation of (i) sodium ion, and (ii) chloride ion, from their respective atoms giving the number of protons and number of electrons in each one of them. What is the reason for positive charge on a sodium ion and a negative charge on a chloride ion ?


The valencies (or charges) of some of the ions are given below : 

Ion Valency (Charge) Ion Valency (Charge)
Sodium ion 1+ Bromide ion 1–
Ammonium ion 1+ Hydroxide ion 1–
Calcium ion 2+ Sulphate ion 2–
Lead ion 2+ Phosphate ion 3–


Using this information, write down the formulae of the following compounds :
(i) Sodium phosphate
(ii) Ammonium sulphate
(iii) Calcium hydroxide
(iv) Lead bromide 


Give example.

Composite radicals


Give example.

Bivalent acidic radicals


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

Ferrous sulphide 


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

Magnesium phosphate


Complete the following table.

Acid Radicals `→`

 

Chloride

 

Nitrate

 

Sulphate 

 

Carbonate

 

Hydroxide

 

Phosphate

Basic Radicals `↓`

Magnesium

MgCl2

Mg(NO3)2

MgSO4

MgCO3

Mg(OH)2

 Mg3(PO4)2

Sodium

 

 

 

 

 

 

Zinc

 

 

 

 

 

 

Silver

 

 

 

 

 

 

Ammonium

 

 

 

 

 

 

Calcium

 

 

 

 

 

 

Iron (II)

 

 

 

 

 

 

Potassium

 

 

 

 

 

 


Select the correct answer to the statement given below:

An elementary particle of matter – of a group of atoms of different elements behaving as a single unit with charge on the group.


State if the following element or radical is divalent?

Lithium


State if the following element or radical is divalent?

Ammonium


State if the following element or radical is divalent?

Carbide


Atoms that carry positive or negative charges are called ______.


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