The carbon atom is capable of forming four covalent bonds in combination with other elements as hydrogen, oxygen, nitrogen, sulfur, phosphorous and halogens. The compounds formed are called organic molecules which because of the nature of the chemical bond are stable compounds.
Adding an amino group -NH₂ and a carboxylic group -COOH to a carbon chain containing carbon and hydrogen we form amino acids. Condensation of amino acids will form peptides and further proteins, which are chemical molecules from which living things are made.
Carbon is the backbone of the molecules from which life is made.
Answer:
If you multiply the miles per hour (30) by 60 (the amount of minutes in an hour) you should get the number for miles per minute. if you multiply that number by 60, you should get the number for miles per second.
Answer:
Rb<K<Ga<As<Se<S
Explanation:
We must remember that first ionization energy decreases down the group and increases across the period.
First ionization energy decreases down the group because of the addition of more shells which increases the distance between the nucleus and the outermost electron. Hence, Rb has a lower ionization energy that K.
Across the period, increase in the size of the nuclear charge causes the pull of the nucleus on the outermost electrons to increase thereby increasing the ionization energy. Hence ionization energy increases across the period. For this reason, the ionization energy of Ga<As<Se as shown.
