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प्रश्न
Name the metals in the first twenty elements.
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उत्तर
Li, Be, Na, Mg, Al, K and Ca.
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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
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
State the modern periodic law for the classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
From the standpoint of atomic structure, what determines which elements will be the first and which the last in a period of the periodic table?
Give the symbol and valency of the following element and radical.
Hydrogen
Give the symbol and valency of the following element and radical.
Carbonate
Give the chemical formula of sodium hydroxide
Explain structure of modern periodic table in short.
Answer the following in respect of element \[\ce{_16^32S}\].
To which group and period does it belong?
