3. 24Mg12 and 26Mg12 are symbols of isotopes of magnesium. Compare these
isotopes with respect to :
a) Composition of nuclei.
b) Electronic configuration and valency.
c) Chemical properties
d) Physical properties
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3. 24Mg12 and 26Mg12 are symbols of isotopes of magnesium. Compare these
isotopes with respect to :
a) Composition of nuclei.
b) Electronic configuration and valency.
c) Chemical properties
d) Physical properties
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Answer:
a)24 Mg12 have nuclear composition,, 12 protons and 12 neutron
26Mg have ,,,,,, 12 protons and 14 neutrons
b) electronic configuration=1s²,2s²,2p⁶,3s²
valency..2
(i) The nuclei of the isotops have the same numebr of protons (12) but different numbr of neutrons (12,14 respectively) <br> (ii) Both the isotopes have same electonic configuration of their atoms i.e 2(K) 8(L) 2(M) .They have same valence (2) as well <br> (iii) Since the chemical properties are related to the electronic configuration these two isotoes have the same chemical properties <br> (iv) Since the two isotopes differ in theri mass numbers they have different physical propertisdes .
Explanation:
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