Electron Distribution in Different Orbits

Q.

Write the electronic configuration for calcium.

Q.

What is the electron configuration for ${\mathrm{S}}^{2-}$ ion?

Q.

Define Electronic Configuration.

Q. Atomic number of chlorine is 17. How many electrons are present in the M shell of a chlorine atom?

1. 2

2. 8

3. 7

4. 4

Q.

The absorption of hydrogen by metals like palladium and platinum is called ___.

1. Electronic configuration

2. Chemical properties

3. Bond length

4. Nuclear radius

Q.

How many electrons are in a shell?

Q.

Write the electronic configuration of ${}_{19}{K}^{40}$.

1. 2, 8, 9

2. 2, 8, 8, 1

3. 2, 8, 8, 3

4. 2, 8, 18, 12

Q.

An element X having atomic no. 13 reacts with Y having atomic no. 9 to form a compound.Answer the following question based upon the above data.

1. Calculate the valency of X and Y.
2. What is the chemical formula formed between X and Y.
3. Which of the above is metal and which is a non-metal?
4. Why do X and Y react?

Q. The chemical formula of sodium hydroxide is:​

1. NaOH
2. ${\mathrm{Na}}_2\mathrm{OH}$
3. $\mathrm{Na}{\left(\mathrm{OH}\right)}_2$
4. ${\mathrm{Na}}_2{\left(\mathrm{OH}\right)}_2$

Q.

How many valence electrons does Phosphorous have?

Q.

Identify and name the metal out of the following element whose electronic configurations are given below. $2,1$

Q.

The electron distribution in an Aluminum atom is

1. $2,8,3$

2. $2,8,2$

3. $8,2,3$

4. $2,3,8$

Q. Which of the following statements are true about an element having an atomic number of 11?

1. It has 2 electrons in its M shell.
2. It has 8 electrons in its L shell.
3. It has 9 electrons in its L shell.
4. It has 2 electrons in its K shell.

Q.

The maximum capacity of the first shell is:

1. 4

2. 3

3. 2

4. 1

Q.

Given that the $\mathrm{N}$ shell of an element contains 10 electrons, write the electronic configuration of the stable ion.

Q.

The maximum number of electrons that can be filled in the shell K, L, M, N respectively are _______________ respectively.

1. 2, 8, 18, 32

2. 2, 8, 8, 16

3. 2, 8, 16, 32

4. 2, 8, 8, 32

Q.

Write the electronic configuration of the following of the following element:

${}_{15}{}^{31}\mathrm{P}$

Q. Which of the following correctly represents the electronic distribution in Mg atom?

1. $2,8,2$
2. $1,8,3$
3. $8,2,2$
4. $3,8,1$

Q.

1. 2
2. 4
3. 8
4. 16

Q. Identify the element given below.

1. Lithium
2. Carbon
3. Helium
4. Hydrogen

Q.

Write the electronic arrangement for :
Carbon $(\mathrm{atomic}\mathrm{mass}=12,\mathrm{atomic}\mathrm{numbers}=6)$

Q.

What is the maximum number of electrons that can be accomodated in M shell?

Q.

An element has electronic configuration x, y such that x, y and xy all are prime numbers.Identify the element, state its symbol and draw the structure of its atom.