Explanation:
Sodium has atomic number of 11 and its electronic configuration is given by:
![[Na]=1s^22s^22p^63s^1](https://tex.z-dn.net/?f=%5BNa%5D%3D1s%5E22s%5E22p%5E63s%5E1)
The nearest stable electronic configuration to sodium is of the neon. So, in order to attain stability of noble gas it will loose its single electron.
![[Na^+]=1s^22s^22p^63s^0](https://tex.z-dn.net/?f=%5BNa%5E%2B%5D%3D1s%5E22s%5E22p%5E63s%5E0)
Sodium has single valency that is 1.
Let nbe the valency of the ion 'X'
By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.
So, the formulas for all the possible compounds that sodium can form with the other ions will be:
Answer:
0.3 s.
Explanation:
Half-life of a first order reaction is defined as the the time taken for any fraction of the reaction to complete is independent of the initial concentration.
Half-life of a first order reaction, t° = 0.693/k
where,
t° = half-life of the reaction
k = rate constant
= 2.3 s^-1
Therefore,
t° = 0.693/2.3
= 0.30 s.
In secondary structure of a protein, other than peptide bonds, hydrogen bond are formed.
The secondary structure contains regions of amino acid chains that are stabilized by hydrogen bonds from the polypeptide backbone. arrangement of hydrogen bonds between the peptide it is an arrangement nitrogen's and the peptide carbonyl oxygens of different amino acid residues. the most common types of secondary structures are the α helix and the β pleated sheet. both structures are held in shape by hydrogen bonds, which form between the carbonyl O of one amino acid and the amino H of another.
Know more about secondary structure of a protein
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Answer:
41
Explanation:
mate u literally just have to substitute the values into ur formula. u would then get 20 times 2.5 which is 41
