Q: The number of electrons present in M²⁺ ion is 78. The element M will have is positions in modern long form of Periodic table is M²⁺ आयन मे मौजूद इलेक्ट्रॉनों की संख्या 78 है। तत्व M आर्वत सारणी के आधुनिक रूप में कौन सा स्थान होगा?
A.
s-block/s-ब्लाक
B.
p-block/ p-ब्लाक
C.
f-block/ f-ब्लाक
D.
d-block/ d-ब्लाक
Correct Answer:
Option D -
Explanations:
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