Advertisements
Advertisements
प्रश्न
Identify the following reaction as either oxidation or reduction:
Zn → Zn2+ + 2e-
Advertisements
उत्तर
Oxidation
APPEARS IN
संबंधित प्रश्न
Mention the basic tendency of an atom which makes it to combine with other atoms.
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
How many electrons are required or released by each atom in calcium oxide to attain the nearest noble gas configuration?
Give reason
`""_17^35"CI"` and `""_17^37"CI"` do not differ in their chemical reactions.
Complete the following table relating to the atomic structure of some elements.
|
Element Symbol |
Atomic Number |
Mass Number |
Numbers of neutrons |
Number of Electrons |
Number of Protons |
|
Li |
3 |
6 |
|
|
|
|
Cl |
17 |
|
20 |
|
|
|
Na |
|
|
12 |
|
11 |
|
Al |
|
27 |
|
|
13 |
|
S |
|
32 |
16 |
|
|
\[\ce{^24_12Mg}\] and \[\ce{^26_12Mg}\] are symbols of isotopes of magnesium.
(a) Compare the atoms of these isotopes with respect to :
i. the composition of their nuclei
ii. their electronic configurations
(b) Give reasons why the two isotopes of magnesium have different mass numbers.
State the type of bond between Y and Z and give its molecular formula.
Draw the geometric atomic structure of the three isotopes of hydrogen and the two isotopes of chlorine.
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^39_19K}\]
Number of valence electrons in carbon is ______.
