Advertisements
Advertisements
Question
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.
Advertisements
Solution
(a) Y + 3e-→ Y3-
(b) 3X +Y2 → X3Y2
APPEARS IN
RELATED QUESTIONS
(i) How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
(ii) How many electrons are required for their octet structure?
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.
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is
State the following is a reduction reaction or oxidation reaction.
\[\ce{Cu -> Cu^2+}\]
How are X-rays produced?
What do you think would be the observation of `alpha` particle scattering experiment if carried out on (i) heavy nucleus like platinum (ii) light nuclei like litheum.
Name the following:
An element having valency 'zero'
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^12_6C}\]
The element that would form anion by gaining electrons in a chemical reaction is ______.
Write the basic concept of Kossel – Lewis theory.
