Answer:
Single replacement reaction
Explanation:
By right, it should be called displacement reaction or redox reaction. Metal ion A in solution is reduced to form solid metal A while metal solid B is oxidised to form metal ion B.
Only 1 type of replacement occurred so it should be single replacement reaction
Answer:
your answer 1 year
Explanation: i think this has some thing to do with divistion
Answer:
See explanation
Explanation:
The question is incomplete but i will try to give you all the necessary guide that you need in order to answer the question.
When compounds are formed, atoms exchange valency. The valency of nitrogen is three while that of the metal is two. The exchange yields M3N2.
If the compound has been specifically mentioned to be a metal, then it must be a group two element. It could be any of Mg, Ca, Sr, Ba or Ra. I did not mention Be here because most of its compounds are covalent.
This will help you to answer the complete question.
Answer:
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Explanation:
there are three electrons in a 2p sub-energy level of s neutral nitrogen atom.
Answer : Option A) 
Explanation : From the given options;
A) is the molecule which forms double bonds with own atom and becomes stable. It covalently shares the two valence electrons in the valence shell and becomes an octet.
B)
the water molecule does not forms double bond between H atom and O atom as the valency of oxygen is two and hydrogen is one. So two atoms of H forms a single bond with one atom of O.
C) 
molecule shares a covalent bond with the other atom of Cl. This does not forms a double bond as only one electron is needed for Cl to attain the octet state.
D) 
The N atom has 3 electrons for donating, which is fulfilled by each of Cl atoms as they need only one electron to be an octet. It forms a single bond as there are no lone pairs left to form a double bond.
Hence, the correct answer is molecule.
