The Lewis structure for a chlorate ion, ClO3-, should show ____ single bond(s), ____ double bond(s), and ____ lone pair(s).
2 answers:
<u>Answer:</u> A molecule of has 1 single bond, 2 double bonds and 8 lone pairs.
<u>Explanation:</u>
Lewis-dot structure is defined as the structure which represents the number of valence electrons around the atoms. The electrons are represented as dots.
This structure helps in the determination of bonding electrons and non-bonding electrons.
For the given compound
As we know that chlorine has '7' valence electrons and oxygen has '6' valence electron. The negative charge gets add up in the total number of valence electrons.
Total number of valence electrons in = 7 + 3(6) + 1 = 26
In , two electrons of 2 oxygen atoms combine with 2 electrons of chlorine and 1 electron of one oxygen atom combines with 1 electron of chlorine atom.
A lone pair remains on the central atom which is chlorine.
Hence, a molecule of has 1 single bond, 2 double bonds and 8 lone pairs.
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Answer: The correct answer is option B.
Explanation: There are 7 elements in group VIII-A. They are Helium (He), Neon(Ne), Argon(Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo). They are considered as a part of group 18.
Metals are shown in purple color in the periodic table. Metalloids as blue color and Non-metals are shown in green color.
Group VIII-A elements have fully filled orbitals and hence are most stable amongst all the elements in the periodic table. They are considered as least reactive elements and as they are categorized as non-metals. So, they are the least reactive non-metals.
Therefore, the correct option is B.
