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Question

Consider the section of the periodic table given below:
Group numbers1A 1IIA 2IIIA 13IVA 14VA 15VIA 16VIIA 17O 18
LiDOJNe
AMgESiHK
BCFGL

Some elements are given in the above table in their own symbol and position in the periodic table, while others [shaded] are shown with a letter. With reference to the table:
(i) Which is the most electronegative?
(ii) How many valence electrons are present in G?
(iii) Write the formula of the compound between B and H.
(iv) In the compound between F and J, what type of bond will be formed?
(v) Draw the electron dot structure for the compound formed between C and K.

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Answer

(i) J is the most electronegative.

(ii) G has 5 valence electrons.

(iii) B2H is the name of the compound between B and H.

(iv) Covalent bond will be formed between F and J.

(v) Electron dot structure for the compound formed between C and K is shown below:

electron-dot-structure-ck-compound-simplified-chemistry-icse-class-10-900x307

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