Advertisements
Advertisements
प्रश्न
Which of the following lanthanoid ions is diamagnetic?
विकल्प
Eu2+
Yb2+
Ce2+
Sm2+
Advertisements
उत्तर
Yb2+
APPEARS IN
संबंधित प्रश्न
Write the general outer electronic configuration of f- block elements.
The actinoid elements which show the highest oxidation state of +7 are ____________.
What are actinoids? Give three examples.
Actinoid contraction is greater from element to element than the lanthanoid contraction, why?
Which of the following is not an actinoid?
The electronic configuration of gadolinium (Atomic number 64) is ______.
In the modern periodic table, elements are arranged in order of increasing atomic numbers which is related to the electronic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, s, p, d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. In accordance with the Arfbau principle, the seven periods have 2, 8, 8, 18, 18, 32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids are placed at the bottom of the main body of the periodic table.
The element with atomic number 57 belongs to ______.
Electronic configurations of four elements A, B, C and D are given below:
(A) 1s22s22p6
(B) 1s22s22p4
(C) 1s22s22p63s1
(D) 1s22s22p5
Which of the following is the correct order of increasing tendency to gain electron:
Illustrate by taking examples of transition elements and non-transition elements that oxidation states of elements are largely based on electronic configuration.
Electronic configuration, [Ne] 3s2 3p4 is for ______.
