Question

please ans me .........from 10th cbse ncert book

Answer 1

Q1answer- because different properties of chemical react either blast or not react

Answer 2

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(A)

• Elements in the same group (in the periodic table) have similar chemical properties. This is because their atoms have the same number of electrons in the highest occupied energy level
• Group 1 elements are reactive metals called the alkali metals.
• Group 0 elements are unreactive non-metals called the noble gases.

(B)

• To illustrate, an atom of an alkali metal (group 1) loses one electron and forms a cation with a 1+ charge; an alkaline earth
• low first ionization energies, the alkali metals have an overwhelming tendency to form ionic compounds where they have a +1 charge.
• All the alkali metals have relatively high electron affinities because the addition of an electron produces an anion (M−) with an ns2 electron configuration.

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