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Question
Name the following:
Metal with valency 2
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Solution
Magnesium
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RELATED QUESTIONS
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.
What is the contribution of the following in atomic structure?
Democritus
Name the following:
The shell closest to the nucleus of an atom
Write down the electronic configuration of
(i) chlorine atom (ii) chlorine ion
Five atoms are labelled V to Z
| Atoms | Mass Number | Atomic Number |
| V | 40 | 20 |
| W | 19 | 9 |
| X | 7 | 3 |
| Y | 16 | 8 |
| Z | 14 | 7 |
- Which one of these atoms
(1) contains 7 protons;
(2) has an electronic configuration 2, 7? - Write down the formula of the compound formed by atoms X and Y.
Sodium having atomic number 11, is ready to ______ electron/ electrons to attain the nearest noble gas electronic configuration.
The element that would form cation due to the loss of electrons during the chemical reaction is ______.
| Name of compound | Type of compound | |
| a. | Sodium chloride | ______ |
| b. | ______ | co-ordinate covalent compound |
| c. | Methane | ______ |
| d. | Fluorine molecule | ______ |
How many electrons are required or released by each atom in carbon tetrachloride to attain the nearest noble gas configuration?
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
