Advertisements
Advertisements
Question
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a metal.
Advertisements
Solution
Electronic configuration of element A = (2, 8, 8, 1) at atomic no. 19
∴ Element B having 1 electron in outermost orbit is a Metal.
APPEARS IN
RELATED QUESTIONS
In term of electron transfer, define Oxidation
A Compound 'X' consists of only molecules. Hence 'X' will have
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
Answer the following questions based on the table above:
What is the formula of the compound formed between X and Z.
What do you understand by redox reactions? Explain oxidation and reduction in terms of loss or gain of electrons.
Define the term:
orbit
What do you understand by redox reactions?
Identify the following reaction as either oxidation or reduction:
Fe3+ + e- → Fe2+
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^31_15P}\]
Match the following:
| 1. | Monoatomic gaseous atom | a. | Electrovalent bond |
| 2. | Octet rule | b. | Benzene |
| 3. | Ionic bond | c. | Water |
| 4. | Non-polar solvent | d. | Electronic theory of valence |
| 5. | Polar solvent | e. | Noble gases |
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
