Atoms bond by sharing valence electrons.
Answer: A) Na+ and O2-
Explanation:
To know the electronic configuration, one has to determine the numbers of electrons present in each atom.
Na+ means a sodium atom that has lost one valence electron. A Sodium atom initially has 11 electrons, but having lost an electron making it 10 electrons remaining with electron configuration of 1s2 2s2 2p6.
O2- means oxygen atom that has gained two valence electrons. An oxygen atom initially has 8 electrons, having gained two electrons makes it 10 electrons with electron configuration of 1s2 2s2 2p6. same as Na+
The purpose of gaining or losing electrons is to attain a stable duplet or octet structure.
The two ions with same electronic configuration are Na and O² .
Electronic configuration is defined as the distribution of electrons of an atom or a molecule in orbitals of an atom or of a molecule.It describes each electron which is moving independently in it's orbital.
Electrons are able to move from one configuration to another by either absorption or emission of a quantum of energy, which is called as a photon.It is useful in understanding the structure of periodic table.
Considering the pair of sodium cation and oxygen anion the sodium atom with one positive charge has 10 electrons and oxygen anion with two negative charge has 10 electrons .
The elements with same number of electrons are called isoelectronic species.
Learn more about electronic configuration,here:
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b. False
Explanation:
Burning of alcohol produces different products as it depends on the type and nature of alcohol which is being burnt.
Some alcohols upon burning produce toxic gases or products whereas some alcohols on burning does not produce any toxic substances.
For example, when ethanol is burnt then it reacts with oxygen and results in the formation of water and carbon dioxide.
Thus, we can conclude that the statement burning alcohol for fuel is a very efficient process is a false statement.
Answer:one-party system
Explanation:Just had this question on my post test and was correct