Answer: no they don’t they only have one
Explanation:
The fertilized egg enters a 2-week period of cell division. during this period, the fertilized egg is known as an embryo.
Following sexual intercourse, sperms move from the vagina via the cervix and uterus to the fallopian tubes, where only a single sperm fuses with the egg.
The fertilized egg or the zygote divides constantly as it travels down the fallopian tube to the uterus. Initially, the zygote is transformed into a solid ball of cells after which it changes into a hollow ball of cells i.e. a blastocyst.
The blastocyst gets embedded in the wall of the uterus, where it evolves into an embryo connected to a placenta and enclosed by fluid-filled membranes.
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Answer:
Chemical bonding
Explanation:
Outer most shell's electrons are called valence electrons and they are responsible for the formation of chemical bonds either ionic or covalent when atoms react with each other.
Outer most electrons hold immense importance in the type of chemical bonding an atom will go through in the formation of a molecule.
For example, sodium has only one electron in outermost shell so it is very hard for sodium to share electrons and become stable. Therefore, it never goes for covalent bonding but only goes for ionic bonding where it gives off one electron to another atom (say chlorine who has 7 electrons in outermost shell) and in this process sodium chloride is formed and both sodium and chlorine get stable electronic configuration.
Please see picture for better understanding. Therefore, we can say that Electrons in the outermost energy level are usually involved in chemical reactions which are called chemical bonding or formation of chemical bonds.
Hope it help!
What specifically happens to the star depends entirely upon its size. If it's small for example it will contract into a white dwarf star.
They both are formed through the attraction of atoms possessing opposite polarities. Hydrogen bonds is a relatively weak bond between two oppositely charged sides of two or more molecules and in an ionic bond, an atom gives away one or more electrons to another atom, which means the ionic bond is stronger.
