How does a straight-chain alkane that has five carbon atoms differ from a cycloalkane that has five carbon atoms?
the straight-chain alkane has at least one double or triple bond, but the cycloalkane has only single bonds.
the straight-chain alkane has only single bonds, but the cycloalkane has at least one double or triple bond.
the straight-chain alkane has two more hydrogen atoms than the cycloalkane.
the straight-chain alkane has two fewer hydrogen atoms than the cycloalkane.

The straight-chain alkane has two more hydrogen atoms than the cycloalkane.

Explanation:

1(General chemical formula for straight-chain alkane

Given : Alkane with five carbon atoms

Chemical formula of the alkane will be

From the chemical formula, there are 12 hydrogen atoms in a given alkane.

2)General chemical formula for cycloalkanes

Given : Cycloalkane with five carbon atoms

Chemical formula of the cycloalkane will be

From the chemical formula, there are 10 hydrogen atoms in a given cycloalkane.

From both the chemical formulas we can say that straight-chain alkane has two more hydrogen atoms than the cycloalkane.

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.