Guess the atomic weight of middle el...

Guess the atomic weight of middle element if the atomic weights of first and last elements are 7 and 39 respectively according to Law to triaids.

A

Lithium

B

Sodium

C

Potassium

D

We cannot say

Text Solution

Verified by Experts

Topper's Solved these Questions

CLASSIFICATION OF ELEMENTS -THE PERIODIC TABLE
VGS PUBLICATION-BRILLIANT|Exercise CREATIVE QUESTIONS FOR NEW MODEL EXAMINATION (SECTION -IV) (APPLICATION TO DAILY LIFE , CONCERN TO BIODIVERSITY )|4 Videos
CLASSIFICATION OF ELEMENTS-THE PPERIIODIC TABLE
VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|20 Videos

Similar Questions

Explore conceptually related problems

Atomic weight of fluorine element from its ore ?

Name the first and last elements of Lanthanides.

Element with the lowest atomicity

In dobereiner triad, the atomic weight of middle element is :

The atomic radius of which element is least

The element with atomic number 7 is found in

Name the first and last elements of Actinides.

Element with the least atomic size.

The atomic weight of 'Be' is____ if the equivalent weight of Be is 4.5 and its valency is 2.

The Atomicity of the element Sulphur is-

VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE

Valency of an element indicates
Text Solution
|
The formula of oxides and chloride of Eka-Silicon is
Text Solution
|
Guess the atomic weight of middle element if the atomic weights ...
Text Solution
|
Ea2O3: EsO2 : GeO2 [ Ea = Eka aluminium, Es= Eka silicon]
Text Solution
|
Mendeleeff said about eka-aluminium "If I hold it in my hand, it will ...
Text Solution
|
Which of the following elements are not available at the time of Mende...
Text Solution
|
Which of the following element does not contain '3s' orbital ?
Text Solution
|
Why are lanthanides and actinides placed separately at the bot...
Text Solution
|
If 'He' is not a inert gas, it should be placed in the group.
Text Solution
|
n = 1: 1s ::n = 2: ………….
Text Solution
|
Guess the period if it has only '8' elements and K, L shells.
Text Solution
|
Which one shrinks in size than atom : i) Na^+ii) Na iii) Cl^- iv) CI
Text Solution
|
The ionization potential of 'Be' is more than 'B'. This is due to
Text Solution
|
Assertion (A) : The size of Na^+ ion is less than 'Na' atom. Reason (R...
Text Solution
|
The element at the bottom of a group would be expected to show ...
Text Solution
|
The outermost main shell of an element is 'M' shell. This element belo...
Text Solution
|
Give example where the electronic configuration of an element does not...
Text Solution
|
generally show less electronegative character.
Text Solution
|
The atomic radius of Cl than Cl^- atom.
Text Solution
|
cannot be decomposed into further substance by a physical or chemical ...
Text Solution
|