Periodic Classification of Elements
The electronic configuration of an element is $$1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$$. The atomic number of the element which is just below the above element in the periodic table is :
Identify the incorrect match. Name IUPAC Official Name a) Unnilunium i) Mendelevium b) Unniltrium ii) Lawrencium c) Unnilhexium iii) Seaborgium d) Unununnium iv) Darmstadtium
The IUPAC name for $$Unununnium$$ is $$Rontgenium$$
All other match are correct.
Option C is correct
The electronic configuration of an element is $$1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$$. The atomic number of the element which is just below the above element in the periodic table is :
An element $$X$$ belongs to group III-A and 4th period in the periodic table. Find out the atomic numbers of $$X$$ and the element which is placed just below $$X$$ in the periodic table.
(a) What are the following groups known as? (i) Group $$18$$ (ii) Name two elements of the group.
The element $$X$$ in group $$17$$ has $$3$$ shells. If so, Write the subshell electronic configuration of the element.
(a) What are the following groups known as? (i) Group $$18$$ (ii) Name two elements of the group.
This question refers to elements of the periodic table with atomic numbers from $$3$$ to $$18$$. In the table below, some elements are shown by letters, even though the letters are not the usual symbols of the elements. $$3$$ $$4$$ $$5$$ $$6$$ $$7$$ $$8$$ $$9$$ $$10$$ $$A$$ $$B$$ $$C$$ $$D$$ $$E$$ $$F$$ $$G$$ $$H$$ $$11$$ $$12$$ $$13$$ $$14$$ $$15$$ $$16$$ $$17$$ $$18$$ $$I$$ $$J$$ $$K$$ $$L$$ $$M$$ $$N$$ $$O$$ $$P$$ Which of these is a halogen?
Give the formula and valency of aluminium.
An element $$X$$ belongs to group III-A and 4th period in the periodic table. Find out the atomic numbers of $$X$$ and the element which is placed just below $$X$$ in the periodic table.
If the valence shell electronic configuration for an element is $$ns^2np^5$$, this element belongs to the group of:
Litharge is chemically: