nursing UP CNET BSc Nursing 2025 Mock Test Series Chemistry d And f - Block Elements

निम्नलिखित में से समान रंग वाले आयनों (जलीय विलयन) का सही समूह कौन सा है?

1
V2+, Cr3+, Mn3+
2
Zn2+, V3+, Fe3+
3
Ti4+, V4+, Mn2+
4
Sc3+, Ti3+, Cr2+
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