Single Choice

Which shows maximum valency?

APhosphorus
Correct Answer
BTin
CAntimony
DBismuth

Solution

Phosphorus show maximum valency of 5. In a group, tendency to form higher oxidation state decreases down the group due to inert pair effect.

SIMILAR QUESTIONS

Periodic Classification of Elements

The number of valence electrons and the valency with respect to hydrogen are equal for :

Periodic Classification of Elements

Mendeleev predicted the existence of certain elements not known at that time and named two of them as eka-aluminium and eka-silicon. (a) Name the element which has taken the place of (i) eka-aluminium and (ii) eka-silicon. (b) Mention the period/ periods of these elements in the modern periodic table. (c) Write the group/groups of these elements in the modern periodic table. (d) Classify these elements as metals, non-metals or metalloids. (e) How many valence electrons are present in the atoms of each of these elements?

Periodic Classification of Elements

An element barium has atomic number $$ 56 $$ . Look up its position in the periodic table and answer the following questions : What is its valency ?

Periodic Classification of Elements

This question refers to the elements of the periodic table with atomic number from $$ 3 $$ to $$ 18 $$. Some of the elements are shown by letters , but 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 an element with valency $$ 4 $$ ?

Periodic Classification of Elements

The electronic configuration of an element T is $$ 2 , 8 , 8 , 1 $$ . What is the valency of T ?

Periodic Classification of Elements

A metal M forms as oxide having the formula $$ M_2O_3 $$. It belongs to third period . Write the atomic number and valency of the metal.

Periodic Classification of Elements

The table given above represents the first three periods. Study the table and answer the question as given below : How many electrons are present in the valency of the element with atomic number $$18 $$ ?

Periodic Classification of Elements

An element A has an atomic number $$7$$ and mass number $$14.$$ $$B$$ has electronic configuration $$2,8,8.$$ $$C$$ has $$13$$ electrons, $$14$$ neutrons. $$D$$ has $$18$$ protons and $$22$$ neutrons. $$E$$ has electronic configuration $$2,8,8,1.$$ State valency of each element

Periodic Classification of Elements

Mendeleev predicted the existence of certain elements not known at that time and named two of them as eka-aluminium and eka-silicon. (a) Name the element which has taken the place of (i) eka-aluminium and (ii) eka-silicon. (b) Mention the period/ periods of these elements in the modern periodic table. (c) Write the group/groups of these elements in the modern periodic table. (d) Classify these elements as metals, non-metals or metalloids. (e) How many valence electrons are present in the atoms of each of these elements?

Periodic Classification of Elements

In any short period the valency of an element with respect to oxygen

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