Alkali Earth Metals

Q.

In the modern periodic table the elements Be, Mg, Ca, Sr, Ba and Ra belong to the group

1. 8
2. 15
3. 12
4. 2

Q. Which of the following is an alkaline earth metal?

1. ${}_{11}$Na
2. ${}_{12}$Mg
3. ${}_{19}$K
4. ${}_{13}$Al

Q.

Which group of elements in the modern periodic table are referred as 'alkaline earth metals'?

1. Group 2

2. Group 1

3. Group 17

4. Group 18

Q. The alkaline earth metals are group 2 elements of the periodic table.

1. True
2. False

Q. The position of the three elements A, B and C in the periodic table indicated below:
Group16 Group17
--- ------ (first period)
-------- A (second period)
----- ------ (third period)
B C (fourth period)
1. state whether metal C is metal or non-metal. Why?
2. Which is more active element, A or C? Why?
3. which type of ion (cation or anion) will formed by the element C? Why?

Q.

An element X belongs to 3^rd period and group 2 of the periodic table. State :

(a) number of valence electrons (b) valency (c) metal or non-metal (d) name of the element

Q.

(a) How do alkaline earth metals occur in nature ?

(b) Write the electronic configuration of the first two alkaline earth metals.

Q.

(a) Name the first three alkaline earth metals.

(b) Write their reactions with dil hydrochloric acid.

Q.

An element A has 2 electrons in its fourth shell.State:

(a) its atomic number

(b) its electronic configuration

(c) its valency

(d) position in the periodic table

(e) is it a metal or non-metal

(f) is it an oxidising or reducing agent.

Q.

In the modern periodic table the elements Be, Mg, Ca, Sr, Ba and Ra belong to the group

1. 8
2. 12
3. 15
4. 2