CameraIcon

SearchIcon

MyQuestionIcon

2

You visited us 2 times! Enjoying our articles? Unlock Full Access!

Covalent Bond

The atomic no...

Question

The atomic no. of an element 'x' is 20.Write (a)its valency (b) whether it is a metal or non-metal.(c)the formula of a compound when the element 'x' reacts with an element 'y' of atomic no.8.Justify your answer in each case.

Open in App

Solution

1) The atomic number of element is 20. Its electronic configuration is 2,8,8,2. So , it has a valency of 2.
2) It is a metal and it can lose its valence electrons to obtain noble gas electronic configuration.
3) The element Y has an atomic number of 8. Hence , the valency of Y is also 2. The compound formed will be XY.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Atomic number of an element is 16. Predict:-
(a) its valency
(b) whether it is metal or a non metal

An element ‘X’ belongs to 3rd period and group 16 of the Modern Periodic Table.

a) Determine the number of valence electrons and the valency of ‘X’.

b) Molecular formula of the compound when ‘X’ reacts with hydrogen and write its electron dot structure.

c) Name the element ‘X’ and state whether its a metal or a non- metal.

Q. An element 'X' belongs to period "3" and group "16" of the Modern Periodic Table.

(a) Determine the number of valence electrons and the valency of 'X'.

(b) Molecular formula of the compound when 'X' reacts with hydrogen and write its electron dot structure.

(c) Name the element 'X' and state whether it is metallic or non-metallic.

Q. The electronic configuration of an element x is :
K L M
2 8 6
a) What is the group no. element x in the periodic table?
b) What is the period no. of element x is the period table ?
c) What is the number of valence electrons in an atom of x ?
d) What is the valency of x ?
e) Is the element x, a metal or a non-metal ?

Q. Ramu has an element

X

with an Atomic Number of 13, while Somu has an element

Y

with an Atomic Number of 16. If Ramu and Somu mix those elements and heat it, a new compound of

Z

is formed.
Keeping this mind and answer the following question.
i) Write the electronic configuration of

X

.
ii) Write the electronic configuration of

Y

.
iii) Which one is a metal and which is a non-metal?
iv) What is the valency of

X

?
v) What is the valency of

Y

?
vi) Write the formula of

Z

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Introduction to Chemical Bonding

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon