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प्रश्न
What type of bonds are present in methane (CH4) and sodium chloride (NaCl)?
उत्तर
The chemical bond present in methane (CH4) is covalent bond as a carbon atom shares its four valence electrons with four hydrogen atoms to form one methane molecule.
The chemical bond present in sodium chloride (NaCl) is ionic bond as a sodium atom transfers one electron to a chlorine atom to form the ionic bond in NaCl.
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संबंधित प्रश्न
Name the type of bonds formed in ionic compounds and in the compounds formed by carbon.
State the reason to explain why covalent compounds "have low melting and boiling points."
Choose the most appropriate answer from the following list of oxides which fit the description.
A covalent oxide of a metalloid.
What do you call the compounds having the same molecular formula but different structural arrangements of atoms?
What type of bond is present in oxygen molecule?
Explain why, diamond is hard while graphite is soft (though both are made of carbon atoms).
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
The organic compound prepared by Wohler from an inorganic compound called ammonium cyanate was:
(a) glucose
(b) urea
(c) uric acid
(d) vinegar
One of the following is not an allotrope of carbon. This is:
(a) diamond
(b) graphite
(c) cumene
(d) buckministerfullerene
The pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
What is the difference between ionic compounds and polar covalent compounds?
Methane molecule is non-polar molecule. Explain.
Draw an electron dot diagram for the formation of the following. State the type of bonding present in them.
Hydroxyl ion
Observe the straight chain hydrocarbons given below and answer the following
questions :
i) Which of the straight chain compounds from A and B is saturated and unsaturated straight chains?
ii) Name these straight chains.
iii) Write their chemical formulae and number of – CH2 - units.
Explain the following briefly:
Sodium chloride dissolves in water but carbon tetra chloride is insoluble in water.
An element L consists of molecules.
What type of bonding is present in the particles that make up L?
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of
"Carbon prefers to share its valence electrons with other atoms of carbon or with atoms of other elements rather than gaining or losing the valence electrons in order to attain noble gas configuration." Give reasons to justify this statement.
Assertion (A): Melting point and boiling point of ethanol are lower than that of sodium chloride.
Reason (R): The forces of attraction between the molecules of ionic compounds are very strong.
