Table of Contents
What alkaline earth metal has the smallest atomic size?
Explanation: Atomic size decrease across a Period (from left to right) BUT INCREASE DOWN A GROUP. You have 3 alkaline earth metals: 3rd period magnesium; 5th period strontium; and 6th period barium. Clearly magnesium is the SMALLEST metal, and barium is the LARGEST.
What is the lightest alkaline earth metal?
beryllium
The lightest alkaline metal is beryllium (Be) with an atomic number of 4 and an atomic mass of 9.012182.
What alkali metal is the smallest?
Answer: lithium is a alkali metal which is smallest in size.
Which metal has the smallest atomic size?
helium
Thus, helium is the smallest element, and francium is the largest….Periodic Trends — Atomic and Ionic Radii.
| 3A | (13) |
|---|---|
| 4A | (14) |
| 5A | (15) |
| 6A | (16) |
What metal has the smallest atomic radius?
Helium
Explanation: Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus. Atomic radius decreases as you move across a period from left to right and decreases as you move up a group from bottom to top.
Why alkaline earth metals are less ionic than alkali metals?
That is because Alkaline earth metals have smaller sizes of cation and more valence electrons. Thus compounds of alkali earth metal are less ionic than alkali metal.
Which is the biggest alkali metal?
Cesium is the largest atom among alkali metal.
Which atom is smallest and largest among the alkali metals?
(A) Trends in the Atomic Radius of Group 1 (IA, Alkali Metals) Elements
| Element | Atomic Number (Z) | Trend |
|---|---|---|
| lithium | 3 | smallest | |
| sodium | 11 | ↓ |
| potassium | 19 | ↓ |
| rubidium | 37 | ↓ |
Which element has the smallest atom?
Helium is the smallest atom. An electron gets added to each element from left to right and in the same shell. More the attraction, less the space. Therefore helium has the smallest atomic size.
Which of the atoms listed below has the smallest radius?
Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus.
Which is the least metallic alkaline earth metal?
The most metallic element is Francium, so the least metallic alkaline earth metal would be the one farthest away from Francium on the Periodic Table: Beryllium, Be. Q: What is the least metallic alkaline earth metal?
What are the characteristics of alkaline earth?
The alkaline earths possess many of the characteristic properties of metals. Alkaline earths have low electron affinities and low electronegativities. As with the alkali metals , the properties depend on the ease with which electrons are lost. The alkaline earths have two electrons in the outer shell.
Is the element 120 an alkaline earth metal?
In order of increasing atomic number, the six element names and symbols are: If element 120 is produced, it will most likely be a new alkaline earth metal. Presently, radium is the only one of these elements that is radioactive with no stable isotopes. Element 120 would be radioactive, too.
Are there any alkali metals in the periodic table?
Not to be confused with Alkali metal. The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).