Intake
The intake stroke of an internal combustion engine may be considered as the start of the cycle. Here, the air/gas mixture enters the combustion chamber and is then compressed. After the compression, the mixture is ignited to drive the piston upwards and turn the shaft to which the piston is connected, driving the vehicle forward.
The answer is A: its amorphous struture
If the atom is neutral, then the number of electrons will ALWAYS be the same as the number of protons (which is the atomic number), so in this case the number of protons is 16, and that make the number of electrons 16
Only an alteration in the properties of the medium will cause a change in the speed.
Electron groups could be considered as Lone pair electrons and bonded pairs of electrons.
Answer: Option D & B
<u>Explanation:</u>
The two or more electrons can be bonded by single bond, double bond, covalent bond of electrons can simply be lone pair of electrons. Unshared pair of electrons are generally termed as lone pair of electrons in an atom which are generally present in the outermost shell of atoms. Hence electron groups can be determined by bonded pairs and lone pairs of electrons.