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प्रश्न
Name the element which is in first group and third period.
उत्तर
Sodium (Na) is the element which is in the first group and the third period.
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संबंधित प्रश्न
The atomic masses of three elements A, B and C having similar chemical properties are 7, 23 and 39, respectively.
- Calculate the average atomic mass of elements A and C.
- Compare the average atomic mass with atomic mass of B.
- What could the elements A, B and C be?
How do the valency and the atomic size of the elements vary while going from left to right along a period in the modern periodic table?
How do electronic configurations of elements change in second period of periodic table with increase in atomic numbers?
How does the number of:
valence electrons and
How can the valency of an element be determined if its electronic configuration is known?
Fill in the blank
Oxidising property ________from fluroine to iodine because the power to accpet electron decreases.
State whether the following statement is true or false
On moving horizontally across a period, number of valence electrons increases from one to eight.
Give the number of the group and the period of elements having three shells with three electrons in valence shell.
Name or state following with reference to the element of the first three periods of the periodic table.
A covalent compound formed between an element in period 1 and a halogen.
