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प्रश्न
Name two elements in Alkali metals.
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उत्तर
Sodium and potassium.
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संबंधित प्रश्न
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
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Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
State the modern periodic law.
What is the number of elements in the 1st period?
Give the symbol and valency of the following element and radical.
Sulphate
Elements in the modern periodic table are arranged in ______groups and______ periods.
On moving from left to right in a period in the periodic table, the size of the atom ______
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
Name the metalloids in the first twenty elements.
