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Carbon and hydrogen

Explanation:

Covalent bonds are formed by sharing of electrons between non metals.

A polar covalent bond is defined as the bond which is formed when there is a significance difference of electronegativities between the atoms. It is also defined as the bond which is formed due to the unequal sharing of electrons between the atoms.

Non-polar covalent bond is defined as the bond which is formed when there is no  or little difference of electronegativities between the atoms. It is also defined as the bond which is formed due to the equal sharing of electrons between the atoms.

As electronegativities of carbon (2.6) and hydrogen (2.2) are quite near to each other , they will form a non polar covalent bond.

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the answer is d.indefinite shape but definite volume, let go oogle u out

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answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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