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प्रश्न
Name two elements in Alkali metals.
उत्तर
Sodium and potassium.
संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
Which element has the electronic configuration 2, 8, 2?
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
Two elements P and Q belong to the same period of the modern periodic table and are in group 1 and group 2, respectively. Compare the following characteristics in the tabular form.
- Number of electrons in their atoms
- Their tendency to lose electrons
- Their metallic characters
- Formation of their oxides
- Formulae of their chlorides
In the Modern Periodic Table – atoms of all elements are arranged according to their increasing order of – atomic numbers. An atom of nitrogen has seven protons and seven electrons. State what would be its atomic number.
Name the cation and the anion in the salt – calcium sulphate
Give the symbol and valency of the following element and radical.
Sulphur [Sulphide]
Give the chemical formula of carbonic acid
The d-block elements are called as _______ elements.
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
