Question

what are the main features of a periodic classification of the elements? Explain some of its important applications .
plz important applications bhi btaye
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Answer 1

Answer:

The periodic table of elements contain horizontal rows (known as periods) and vertical columns (known as groups). In all there are 7 periods and 18 groups in the periodic table. All the elements with similar electronic configuration are placed in the same vertical column or group.

Application ofperiodic table is to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table's arrangement also allows scientists to discern trends in element properties, including electronegativity, ionization energy, and atomic radius.

Answer 2

The main features of the periodic classification of elements are as follow:

• The modern periodic table consists of seven horizontal rows and eighteen vertical columns.
• There are two rows shown at the bottom of the table apart from these seven rows which consist of lanthanide and actinide series.
• The periodic table is basically divided into four blocks, s-block, p-block, d-block, and f-block. The s-block contains group 1 and 2 whereas the p-block constitute groups 13 to 18. The d-block contains groups 3 to 12 and the lanthanide and actinide series at the bottom of the table form the f-block.
• The elements in the modern periodic table are arranged on the basis of atomic numbers. This helps to understand the properties of different elements accurately and to refer to the information whenever needed.
• The periodic table is also arranged according to periodic trends, electronegativity, atomic radius and ionization energy that help scientists to analyze the reactivity of elements.