Single Choice

If the valence shell electronic configuration for an element is $$ns^2np^5$$, this element belongs to the group of:

Aalkali metals
Binert metals
Cnoble gases
Dhalogens
Correct Answer

Solution

The electronic configuration $$ns^2, np^5$$ shows that the elements has $$7$$ electrons in its valence shell and it is a halogen.

SIMILAR QUESTIONS

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 :

Periodic Classification of Elements

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.

Periodic Classification of Elements

(a) What are the following groups known as? (i) Group $$18$$ (ii) Name two elements of the group.

Periodic Classification of Elements

The element $$X$$ in group $$17$$ has $$3$$ shells. If so, Write the subshell electronic configuration of the element.

Periodic Classification of Elements

Identify the incorrect match. Name IUPAC Official Name a) Unnilunium i) Mendelevium b) Unniltrium ii) Lawrencium c) Unnilhexium iii) Seaborgium d) Unununnium iv) Darmstadtium

Periodic Classification of Elements

(a) What are the following groups known as? (i) Group $$18$$ (ii) Name two elements of the group.

Periodic Classification of Elements

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?

Periodic Classification of Elements

Give the formula and valency of aluminium.

Periodic Classification of Elements

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.

Periodic Classification of Elements

Litharge is chemically:

Contact Details