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प्रश्न
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reducing agent.
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उत्तर
\[\ce{2K + Cl2 -> 2KCl}\]
A reducing agent reduces other substances either by providing electrons, hydrogen, or an electropositive ion or by removing oxygen or an electronegative ion.
\[\ce{K -> K+ + e-}\]
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संबंधित प्रश्न
Define a chemical bond.
Five atoms are labelled from A to E.
| Atoms | Mass No. | Atomic No. |
| A | 40 | 20 |
| B | 19 | 9 |
| C | 7 | 3 |
| D | 16 | 8 |
| E | 14 | 7 |
(a) Which one of these atoms:
(i) contains 7 protons,
(ii) has an electronic configuration 2, 7?
(b) Write down the formula of the compound formed between C and D.
(c) predict which are: (i) metals, (ii) non-metals?
Fill in the blank.
___________ single covalent bonds are formed between the carbon and chlorine atoms.
Element X is a metal with a valency 2; Y is a non-metal with a valency 3.
(a) Write an equation to show how Y forms as ion
(b) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.
Define the term:
orbit
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
Give reason
Argon does not react.
Draw orbit structure diagram of calcium oxide (CaO).
Give the orbital diagram of the following:
Methane
State the type of bonding in the following molecules.
Water,
State the type of bonding in the following molecules.
Hydrogen chloride
Identify the following reaction as either oxidation or reduction:
K - e- → K+
The element that would form anion by gaining electrons in a chemical reaction is ______.
How do atoms attain Noble gas electronic configuration?
Complete the table give below.
| Element |
Atomic number |
Electron distribution | Valence electrons | Lewis dot structure |
| Lithium | 3 | 1s22s1 | ||
| Boron | 5 | 1s22s22p1 | ||
| Oxygen | 8 | 1s22s22p4 |
How many atoms of each kind are present in the following molecule:
water
How many electrons are required or released by each atom in water molecule to attain the nearest noble gas configuration?
The one which is composed of all the three kinds of bond.[ionic, covalent and coordinate bond]
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
