The principal quantum number of the first d shell is three. The principal quantum number determines the size of the orbital. The secondary divides the shell into subshells called orbitals and designated by the letters s, p, d, f. From the sequence of the electron configuration, it can be seen that at a principal quantum number of three the d shell first appear.
Answer:
The expended structural formula is shown in attached image.
Explanation:
The given compound is 5 - Methyl - 1 - hexene.
Its molecular formula is C₇H₁₄.
Its molecular weight is 98.19 g/mol.
It is colorless liquid.
Its density is less is compared to water
It is insoluble in water.
Its other names are 5-Methylhex-1-ene , 1-Hexene, 5-methyl- Isoheptene.
Answer:
D. They have the same number of protons as electrons.
Explanation:
Protons are found in the nucleus of the atom and have a positive charge while electrons orbit around the nucleus and have a negative charge. Usually, in a neutral atom of an element, the number of protons is equal to the number of electrons. This is why the atom has no charge because the positive and negative charges cancel out. When an atom loses an electron its charge turns positive while when it gains an electron its charge turns negative.
Answer:
true
Explanation:
in order for the atom to be neutral the number of protons and electrons have to be the same.