Advertisements
Advertisements
Question
_______ is the outermost shell for elements of period 2.
Options
K
L
M
N
Solution
L is the outermost shell for elements of period 2.
APPEARS IN
RELATED QUESTIONS
Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with explanation.
3Li, 14Si, 2He, 11Na, 15P Which of these elements belong to be period 3?
Write down the electronic configuration of the following elements from the given atomic numbers. Answer the following question with an explanation.
13Al, 14Si, 11Na, 12Mg, 16S
Which of the above elements has the highest metallic character?
An element has its electron configuration as 2,8,2. Now answer the following questions.
i. What is the atomic number of this element?
ii. What is the valency of this element?
iii. What is the group of this element?
iv. To which period does this element belong?
v. With which of the following elements would this element resemble?
`_7N , _4Be , _18Ar , _17CL`
An element has its electron configuration as 2, 8, 2. Now answer the following question.
With which of the following elements would this element resemble?
(Atomic numbers are given in the brackets)
N(7), Be(4), Ar(18), Cl(17)
Which pair of atomic numbers represents elements in the same group?
Write the name of noble gas having 2 electrons in its valence shell.
What determines the chemical reactivity of elements?
Match the columns.
Column A | Column B |
1) s -block | a) Lanthanides and actinides |
2) p -block | b) Group 3 to 12 |
3) d -block | c) Group 1, 2 |
4) f -block | d) Group 13 to 18 |
e) Zero group |
Match the columns.
Column A | Column B |
Electronic configuration |
Valency |
1) 2, 2 | a) 1 |
2) 2, 8, 1 | b) 2 |
3) 2, 5 | c) 3 |
d) 5 |
Match the columns.
Column A | Column B |
1) Alkaline earth metals | a) Group 18 |
2) Alkali metals | b) Group 17 |
3) Halogen | c) Group 2 |
4) Noble gas | d) Group 1 |
e) Group 14 |
Write the name.
The element having stable electron configuration from the third period.
Write the name.
The group of elements having electronic configuration 2, 2.
The elements lithium and beryllium are in the same period because their valencies are similar.
Find the period in which these elements can be placed.
4Be, 17Cl, 2He, 13Al
Write name of elements, symbol, atomic number, electronic configuration of second period in modern periodic table?
XY compound is formed by X (Atomic number 11) and Y (Atomic number 17), then answer the questions given below.
- Determine the position of the element X and Y periodic table.
- X and Y belongs to which of the following: metals, nonmetals or metalloids?
- From which block the elements X and Y are?
- Determine the electronic configuration and valency of these elements.
An element has its electron configuration as 2, 8, 1. Now answer the following questions:
- What is the atomic number of this element?
- What is the group of this element?
- To which period does this element belong?