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Question
How many atoms of each kind are present in the following molecule:
carbon tetrachloride
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Solution
Carbon tetrachloride (CCl4) is composed of one carbon atom and four chlorine atoms. Carbon atoms have four valence electrons.
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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?
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 question based on the table above:
What is the formula of the compound formed between W and X.
How are X-rays produced?
Write the formula of its (X)
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nitrate
phosphate
carbonate
hydroxide.
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K - e- → K+
Identify the following reaction as either oxidation or reduction:
Fe3+ + e- → Fe2+
The valency of noble gases is ______.
Choose the odd one out and write the reason:
How many atoms of each kind are present in the following molecule:
water
The one which is composed of all the three kinds of bond.[ionic, covalent and coordinate bond]
