Consider the following elements:
Ca, Cl, Na, I, Li, Ba, Sr, K, Br

Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.

Open in App

Solution

(i) Lithium (Li), sodium (Na) and potassium (K) are three metals of group 1 having a valency of 1.
(ii) Calcium (Ca), strontium (Sr) and barium (Ba) are three metals of group 2 having a valency of 2.
(iii) Chlorine (Cl), bromine(Br) and iodine (I) are three non-metals of group 17 which are known as halogens, and have seven valence electrons.

Suggest Corrections

Similar questions

Consider the following elements :

Ca, Cl, Na, I, Li, Ba, Sr, K, Br

Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.

Q. The elements calcium, strontium and barium were put in one group and family on the basis of their similar properties.
What were those similar properties?

Elements have been arranged in the following sequence on the basis of their increasing atomic masses.

F, Na, Mg, Al, Si, P, S, Cl, Ar, K.

(a) Pick two sets of elements which have similar properties.

(b) The given sequence represents which law of classification of elements?

Q. State whether the following elements belong to a Group (G), Period (P) or Neither Group nor Period (N).

Elements	G/P/N
$L i, C, O$
$M g, C a, B a$
$B r, C l, F$
$C, S, B r$
$A l, S i, C l$
$L i, N a, K$
$C, N, O$
$K, C a, B r$

Which of the following elements have similar properties?

F, N a, M g, A l, S i, P, S, C l, A r

K

Join BYJU'S Learning Program

Consider the following elements: Ca, Cl, Na, I, Li, Ba, Sr, K, Br Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.

Consider the following elements:
Ca, Cl, Na, I, Li, Ba, Sr, K, Br

Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.