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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
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
Which of the following statement about the modern periodic table is correct?
(a) It has 18 horizontal rows known as periods.
(b) It has 7 vertical columns known as periods.
(c) It has 18 vertical columns known as groups.
(d) It has 7 horizontal rows known as groups.
Name two elements in Inert gas.
Give the symbol and valency of the following element and radical.
Hydrogen
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Sulphate
What are the elements.
Explain structure of modern periodic table in short.
The scientist who propounded the modern periodic law is ______.
What is the general name of the last elements of the Periodic Table?
