Explanation: Given that atomic size decreases across a Period, the sodium atom is larger than that of magnesium. Both third row metals are larger than second row beryllium, inasmuch as the third Period metals build on the atomic radius (the electron shell) already possessed by the second Period.
Is mg larger than na?
(i) The sodium ion (Na+) is larger than the magnesium ion (Mg2+) due to two effects.
Does Na or Na+ have a larger atomic radius?
As is known from the chemistry course, when the element loses electron (turn into cation, with positive charge), the atom radius is getting low, so obviously Na+ is smaller than Na.
Which is bigger Na or Mg Why?
Answer. Sodium(Na) is bigger than Magnesium(Mg) because the atomic no. of Na is 11 whereas the atomic number of Magnesium is 12 so the atom of Magnesium shrinks more than sodium .
Which element has largest radius?
Explanation: Francium has the largest, Helium has the lowest. Atomic radius increases as you go to the left and downward due to the attraction of electrons and the nucleus in an atom.
Is Br or Br bigger?
Br – will have the largest atomic size because Br- has one extra electron in its valence shell which due to its unbalanced negative charge will be repelled and hence the atomic radius of Br- will increase.
Is Br or F bigger?
Explanation: Fluorine is in group 7A and period 2 making it the smallest of the 5 atoms here. Br is also in group 7A but is in period 4 making it larger than F, Ge is in group 4A and also in period 4 but is to the left of Br making it larger than Br.
Which is larger NE or Na+?
Since Na+ has a higher effective nuclear charge, there is a greater force of attraction between the protons in the nucleus and the valence electrons of Na+, so Na+ is smaller than Ne.
Why atomic size of NA is larger than Na+?
The total number of electrons is 10 in case of Na+ and 11 in case of Na, while the number of proton is same i.e. 11 in both case. Was this answer helpful?
Why is CL larger than Na+?
Na atoms are larger than Cl atoms because the electron cloud of Cl is pulled in more tightly by the increased number of protons in the nucleus. Na+ ions are smaller than Cl- ions because the Na+ ions have electrons in only two energy levels and Cl- ions have electrons in three levels.
Which is smaller Cl or Br?
As Br is smaller than Cl; therefore, Br- have a smaller ionization energy than Cl-. In short, since the outermost electron in bromine is farther from the nucleus than the outermost electron in chloride, it takes less energy to remove the outermost electron in bromide.
Which is smaller Na or MG?
Magnesium atom is smaller than sodium atom because the nuclear charge of Magnesium ( 12+ ) is higher than that of Sodium ( 11+ ). Magnesium nucleus will attract the electrons more toward it and therefore, shrinking the size of the atom.
Why is a magnesium atom smaller than calcium?
Magnesium and calcium have the same number of electrons in their highest occupied energy level. A magnesium atom is smaller than a calcium atom because there are fewer occupied energy levels.
What elements have 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. 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.
What element has the second largest atomic radius?
(A) Trends in the Atomic Radius of Elements in Period 2
| Element | Li | Be |
|---|---|---|
| Energy Level being filled (Valence Shell) | second (L) | second (L) |
| Nuclear Charge (charge on all protons) | 3+ | 4+ |
| Atomic Radius (pm) | 134 | 90 |
| General Trend | (largest) | → |
Which ion has the largest atomic radius?
1 Answer. Ernest Z. K+ has the largest radius.