Advertisements
Advertisements
Question
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reduction.
Advertisements
Solution
\[\ce{2K + Cl2 -> 2KCl}\]
In the electronic concept, a reduction is a process in which an atom or ion accepts electron(s).
\[\ce{Cl2 + 2e--> 2Cl-}\]
RELATED QUESTIONS
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?
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?
Give electron dot diagram of the following:
methane
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Sodium chloride is ______ compound while hydrogen chloride is ______ compound.
What type of bond is formed between two atoms, when the electronegative difference between them is High ?
What type of bond is formed between two atoms, when the electronegative difference between them is zero?
Fill in the blank.
___________ single covalent bonds are formed between the carbon and chlorine atoms.
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is
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.
State the following is a reduction reaction or oxidation reaction.
\[\ce{Pb -> Pb^2+ + 2e-}\]
What is the contribution of the following in atomic structure?
Democritus
Name an element which does not contain neutron.
An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to continue with chlorine and sulfur separately.
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^39_19K}\]
Elements with stable electronic configurations have eight electrons in their valence shell. They are ______.
______ theory explains the formation of molecules.
Match the following:
| 1. | Atomic bond | a. | Oxygen and hydrogen |
| 2. | Atoms with different electronegativities | b. | acceptor bond |
| 3. | An atom that accepts electron pair | c. | covalent bond |
| 4. | Rusting of iron | d. | donor atom |
| 5. | An atom that provides electron pair | e. | oxidation |
| f. | ionic bond |
Choose the odd one out and write the reason:
The one which is composed of all the three kinds of bond.[ionic, covalent and coordinate bond]
