Question

The following table represent a part of the periodic table
Li Be B C N O F
Na Mg Al Si P S Cl
K Br
From these elements, answer the following:
(i) Which is the element having biggest atomic size?
(ii) Which element has the highest ionization energy?
(iii) Which elements constitute alkali metal group?

Answer 1

1. francium
2. helium
3. Alkali metal, any of the six chemical elements that make up Group 1 (Ia) of the periodic table—namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids).

Answer 2

fracium

helium

be,mg,

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