Alkali Earth Metals

Q.

What happens when a base reacts with a metal?

Q.

How many Elements are there on the Periodic Table $2020$?

Q.

Why $\mathrm{Zn}$is not a Transition Metal?

Q. Representative elements belong to s and p-block of the Periodic Table.

1. s and p-block

2. p and d-block

Q.

Elements having 5 valence electrons are placed in____.

1. Group 13

2. Group 14

3. Group 15

4. Group 16

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.

What are the differences between alkali metals, alkali earth metals and alkaline?

Q.

Which group elements are called the normal elements? What are their characteristics?

Q.

An element A belongs to the third period and group 1 of the periodic table. Find out :

i. The number of valence electrons in its atoms.

ii. Valency of the element.

iii. Name of the element.

Q. Total number of elements present in third group of modern periodic table

Q.

Why alkali metals do not form dipositive ions?

Q.

Periods are ___ (rows/columns) in the modern periodic table.

Q.

Complete the following reactions.

$\mathrm{Mg}+2\mathrm{HCl}\to$

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.

A metal present in cryolite other than sodium.

Q.

1. What are Halogens explain with an example.

2. What are alkali metals explain with an example.

3. Write down the similarities of helium and neon.

Q. What is the category name of each column of the periodic table like halogen, etc., ..?

Q. What are alkaline earth metals?

Q. In the modern periodic table, Be, Mg, Ca, Sr, Ba and Ra belong to which group?

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

Q. All the elements in the same group of the modern periodic table have the same number of valence electrons.

1. True
2. False

Q.

A number of elements are available in earth’s crust but most abundantly available elements are ____.

1. Al and Fe

2. Al and Cu

3. Fe and Cu

4. Cu and Ag

Q. How many periods are there in the modern periodic table?

1. 5
2. 8
3. 7
4. 11

Q.

$\mathrm{\_\_\_\_\_\_\_}+\mathrm{dil}.\mathrm{HCl}\to {\mathrm{MgCl}}_2+\mathrm{\_\_\_\_\_}$

Q. Which amongst the following element is present at the top of periodic table?

1. Nitrogen
2. Lithium
3. Oxygen
4. Hydrogen

Q.

Which physical and chemical properties of the elements were used by Mendeleev in creating his periodic table ? List two observation which posed a challenge of Mendeleev's periodic law.

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. An element $X$ combines with hydrogen to form a compound $X{H}_3$. The element $X$ is placed on the right side of the periodic table. What is true about the element $X$?
A. Has 3 valency
B. Is a metal and is solid.
C. Is a non-metal and is a gas.
D. Has 5 valence electrons.
E $X{H}_3$ reacts with water to form a basic compound.

1. A, C and D
2. C, D and E
3. A, B and C
4. E, A and B

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