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प्रश्न
State whether the following statement is true or false:
The symbol of element cobalt is CO.
उत्तर
False. The symbol for the element Cobalt is Co, as the second letter of the symbol of an element has to be in the lower case.
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
The atoms of which of the following pair of elements are most likely to exist in free state ?
How are the elements with variable valency named? Explain with an example.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Na1+ Cl1-
State the type of element for the following:
Platinum
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
State the valency of the following metallic element and write symbol with the valency
Magnesium
Name three metals whose symbols are derived: from their Latin names.
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
