GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ionic bonds
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polar covalent bonds
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nonpolar covalent bonds
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None of the above
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Detailed explanation-1: -As Electronegativity of Nitrogen is 3 and Hydrogen is 2.2, the difference in electronegativity is 0.8 which is less than 1.7. Hence they form covalent bonds. As Nitrogen is more Electronegative atom pulls an electron from the bond towards it hence the dipole moment exist. Thus they are polar in ammonia NH3.
Detailed explanation-2: -The type of bond formed between nitrogen and hydrogen is polar covalent.
Detailed explanation-3: -Bonds between carbon and other elements such as oxygen and nitrogen are polar.
Detailed explanation-4: -Covalent molecules made of only one type of atom, like hydrogen gas (H2), are nonpolar because the hydrogen atoms share their electrons equally.
Detailed explanation-5: -The hydrogen atom and the halogen atoms form only one covalent bond to other atoms in stable neutral compounds. However, the carbon, oxygen, and nitrogen atoms can bond to more than one atom. The number of covalent bonds an atom can form is called the valence of the atom.