208851
निम्न में से किसके द्वारा अम्लीकृत \(KMn{O_4}\) को रंगहीन किया जाता है
1 \(B{r_2}\)
2 \({O_3}\)
3 \(HCl\)
4 \(HBr\)
Explanation:
08. THE D- & F-BLOCK ELEMENTS (HM)
208627
निम्न तथ्य के कारण लैन्थेनाइड संकुचन उत्तदायि है
1 \(Zr\) तथा \(Y\) की त्रिज्या लगभग बराबर होती है
2 \(Zr\) तथा \(Nb\) की ऑक्सीकरण संख्या समान है
3 \(Zr\) तथा \(Hf\) की त्रिज्या बराबर होती है
4 \(Zr\) तथा \(Zn\) की ऑक्सीकरण संख्या समान है
Explanation:
Due to lanthanide contration the size for \(Zr\) and \(Hf\) is same. Lanthanide contraction can be explained on the basis of shielding effect.In multi-electron atoms the electrons are added in outer shells. The electrons already present in inner shells, shield the outer electrons from nuclear charge, making them experience a lower effective charge of the nucleus. The shielding effect exerted by the inner electrons decreases in the order \(s\,>\,p\,>\,d\,>\,f\). This \(f\) subshell poorly shields the outer electron from nuclear attraction which results in more attractive pull of nucleus on outer electron and smaller size.In case of post lanthenide elements like \(Hf, 4 f\) subshell is filled and it is not very effective at shielding the outer shell ( \(n =5\) and \(n =6\) ) electrons. it is similar to \(Zr\).
08. THE D- & F-BLOCK ELEMENTS (HM)
208628
\(C{r^ + }\) में अयुग्मित इलेक्ट्रॉन की संख्या है
208851
निम्न में से किसके द्वारा अम्लीकृत \(KMn{O_4}\) को रंगहीन किया जाता है
1 \(B{r_2}\)
2 \({O_3}\)
3 \(HCl\)
4 \(HBr\)
Explanation:
08. THE D- & F-BLOCK ELEMENTS (HM)
208627
निम्न तथ्य के कारण लैन्थेनाइड संकुचन उत्तदायि है
1 \(Zr\) तथा \(Y\) की त्रिज्या लगभग बराबर होती है
2 \(Zr\) तथा \(Nb\) की ऑक्सीकरण संख्या समान है
3 \(Zr\) तथा \(Hf\) की त्रिज्या बराबर होती है
4 \(Zr\) तथा \(Zn\) की ऑक्सीकरण संख्या समान है
Explanation:
Due to lanthanide contration the size for \(Zr\) and \(Hf\) is same. Lanthanide contraction can be explained on the basis of shielding effect.In multi-electron atoms the electrons are added in outer shells. The electrons already present in inner shells, shield the outer electrons from nuclear charge, making them experience a lower effective charge of the nucleus. The shielding effect exerted by the inner electrons decreases in the order \(s\,>\,p\,>\,d\,>\,f\). This \(f\) subshell poorly shields the outer electron from nuclear attraction which results in more attractive pull of nucleus on outer electron and smaller size.In case of post lanthenide elements like \(Hf, 4 f\) subshell is filled and it is not very effective at shielding the outer shell ( \(n =5\) and \(n =6\) ) electrons. it is similar to \(Zr\).
08. THE D- & F-BLOCK ELEMENTS (HM)
208628
\(C{r^ + }\) में अयुग्मित इलेक्ट्रॉन की संख्या है
208851
निम्न में से किसके द्वारा अम्लीकृत \(KMn{O_4}\) को रंगहीन किया जाता है
1 \(B{r_2}\)
2 \({O_3}\)
3 \(HCl\)
4 \(HBr\)
Explanation:
08. THE D- & F-BLOCK ELEMENTS (HM)
208627
निम्न तथ्य के कारण लैन्थेनाइड संकुचन उत्तदायि है
1 \(Zr\) तथा \(Y\) की त्रिज्या लगभग बराबर होती है
2 \(Zr\) तथा \(Nb\) की ऑक्सीकरण संख्या समान है
3 \(Zr\) तथा \(Hf\) की त्रिज्या बराबर होती है
4 \(Zr\) तथा \(Zn\) की ऑक्सीकरण संख्या समान है
Explanation:
Due to lanthanide contration the size for \(Zr\) and \(Hf\) is same. Lanthanide contraction can be explained on the basis of shielding effect.In multi-electron atoms the electrons are added in outer shells. The electrons already present in inner shells, shield the outer electrons from nuclear charge, making them experience a lower effective charge of the nucleus. The shielding effect exerted by the inner electrons decreases in the order \(s\,>\,p\,>\,d\,>\,f\). This \(f\) subshell poorly shields the outer electron from nuclear attraction which results in more attractive pull of nucleus on outer electron and smaller size.In case of post lanthenide elements like \(Hf, 4 f\) subshell is filled and it is not very effective at shielding the outer shell ( \(n =5\) and \(n =6\) ) electrons. it is similar to \(Zr\).
08. THE D- & F-BLOCK ELEMENTS (HM)
208628
\(C{r^ + }\) में अयुग्मित इलेक्ट्रॉन की संख्या है
208851
निम्न में से किसके द्वारा अम्लीकृत \(KMn{O_4}\) को रंगहीन किया जाता है
1 \(B{r_2}\)
2 \({O_3}\)
3 \(HCl\)
4 \(HBr\)
Explanation:
08. THE D- & F-BLOCK ELEMENTS (HM)
208627
निम्न तथ्य के कारण लैन्थेनाइड संकुचन उत्तदायि है
1 \(Zr\) तथा \(Y\) की त्रिज्या लगभग बराबर होती है
2 \(Zr\) तथा \(Nb\) की ऑक्सीकरण संख्या समान है
3 \(Zr\) तथा \(Hf\) की त्रिज्या बराबर होती है
4 \(Zr\) तथा \(Zn\) की ऑक्सीकरण संख्या समान है
Explanation:
Due to lanthanide contration the size for \(Zr\) and \(Hf\) is same. Lanthanide contraction can be explained on the basis of shielding effect.In multi-electron atoms the electrons are added in outer shells. The electrons already present in inner shells, shield the outer electrons from nuclear charge, making them experience a lower effective charge of the nucleus. The shielding effect exerted by the inner electrons decreases in the order \(s\,>\,p\,>\,d\,>\,f\). This \(f\) subshell poorly shields the outer electron from nuclear attraction which results in more attractive pull of nucleus on outer electron and smaller size.In case of post lanthenide elements like \(Hf, 4 f\) subshell is filled and it is not very effective at shielding the outer shell ( \(n =5\) and \(n =6\) ) electrons. it is similar to \(Zr\).
08. THE D- & F-BLOCK ELEMENTS (HM)
208628
\(C{r^ + }\) में अयुग्मित इलेक्ट्रॉन की संख्या है
208851
निम्न में से किसके द्वारा अम्लीकृत \(KMn{O_4}\) को रंगहीन किया जाता है
1 \(B{r_2}\)
2 \({O_3}\)
3 \(HCl\)
4 \(HBr\)
Explanation:
08. THE D- & F-BLOCK ELEMENTS (HM)
208627
निम्न तथ्य के कारण लैन्थेनाइड संकुचन उत्तदायि है
1 \(Zr\) तथा \(Y\) की त्रिज्या लगभग बराबर होती है
2 \(Zr\) तथा \(Nb\) की ऑक्सीकरण संख्या समान है
3 \(Zr\) तथा \(Hf\) की त्रिज्या बराबर होती है
4 \(Zr\) तथा \(Zn\) की ऑक्सीकरण संख्या समान है
Explanation:
Due to lanthanide contration the size for \(Zr\) and \(Hf\) is same. Lanthanide contraction can be explained on the basis of shielding effect.In multi-electron atoms the electrons are added in outer shells. The electrons already present in inner shells, shield the outer electrons from nuclear charge, making them experience a lower effective charge of the nucleus. The shielding effect exerted by the inner electrons decreases in the order \(s\,>\,p\,>\,d\,>\,f\). This \(f\) subshell poorly shields the outer electron from nuclear attraction which results in more attractive pull of nucleus on outer electron and smaller size.In case of post lanthenide elements like \(Hf, 4 f\) subshell is filled and it is not very effective at shielding the outer shell ( \(n =5\) and \(n =6\) ) electrons. it is similar to \(Zr\).
08. THE D- & F-BLOCK ELEMENTS (HM)
208628
\(C{r^ + }\) में अयुग्मित इलेक्ट्रॉन की संख्या है
