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Chemical Reactivity

which of the ...

Question

which of the following elements has maximum density of nucleus>' n nt1. K (19, 39) n nt2. Al (13, 27) n nt3. He (2, 4) n nt4. ALL

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Q. In the nuclear reaction

_{12} M g^{24} +_{2} H e^{4} =_{0} n^{1} + ?

The product nucleus is

Q. Which of the following elements has maximum density of nucleus?

x

in the following nuclear reaction.

_{2} {H e}^{4} +_{13} {A l}^{27} \to_{x} P^{30} +_{0} n^{1}

Q. Identify the type of change occurs in the following reaction:

_{13}^{27} A l +_{2}^{4} H e ⟶_{15}^{30} P +_{0}^{1} n

Q. Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
a. ₃Li, ₁₄He, ₁₁Na, ₁₅P Which of these elements belong to be period 3?
b. ₁H, ₇N,₂₀Ca, ₁₆S, ₄Be, ₁₈Ar Which of these elements belong tot he second group?
c. ₇N, ₆C, ₈O, ₅B, ₁₃Al Which is the most electronegative element among these?
d. ₄Be, ₆C, ₈O, ₅B, ₁₃Al Which is the most electropositive element among these?
e. ₁₁Na, ₁₅P, ₁₇Cl, ₁₄Si, ₁₂Mg Which of these has largest atoms?
f. ₁₉K,₃Li, ₁₁Na, ₄Be Which of these atoms has smallest atomic radius?
g. ₁₃Al, ₁₄Si,₁₁Na, ₁₂Mg, ₁₆S Which of the above elements has the highest metallic character?
h. ₆C, ₃Li, ₉F,₇N, ₈O Which of the above elements has the highest nonmetallic character?

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