Does Mg or Sr have higher ionization energy?

Periodic Trends — Ionization Energy

	1A	2A
2	Li 513	Be 899
3	Na 496	Mg 738
4	K 419	Ca 590
5	Rb 403	Sr 550

Why does strontium have a low ionization energy?

Strontium is a much larger element, so the outermost electron will be further away from the nucleus (larger atomic radius. This distance decreases the attration of the electron to the nucleus, decreasing the first ionisation energy.

Does strontium have high or low ionization energy?

The elements of the periodic table sorted by ionization energy

Ionization Energy	Name chemical element	number
5,6437	Samarium	62
5,6704	Europium	63
5,6949	Strontium	38
5,7864	Indium	49

What causes higher ionization energy?

On the periodic table, first ionization energy generally increases as you move left to right across a period. This is due to increasing nuclear charge, which results in the outermost electron being more strongly bound to the nucleus.

Why does magnesium have a higher ionization energy than sodium?

The first ionization energy of magnesium is larger than sodium because magnesium has one more proton in its nucleus to hold on to the electrons in the 3s orbital.

What is the ionization energy of magnesium?

737.7
1st–10th ionisation energies

Number	Symbol	1st
11	Na	495.8
12	Mg	737.7
13	Al	577.5
14	Si	786.5

Which is larger magnesium or strontium?

This means, magnesium has a smaller radius than strontium. An element with a smaller radius has a higher ionization energy because as the atomic radius decreases, it becomes difficult to remove an electron that is closer to a more positively charged nucleus.

What is strontium ionization energy?

Electron Affinity and Electronegativity of Strontium. Electron Affinity of Strontium is 5.03 kJ/mol. Electronegativity of Strontium is 0.95. First Ionization Energy of Strontium is 5.6948 eV.

Why is the ionization energy of sodium less than that of magnesium?

Magnesium atom has a smaller radius and higher nuclear charge than a sodium atom, thus more energy will be required to remove the electron from the same orbital (3s), making the first ionisation energy of magnesium higher than that of sodium.

Why does magnesium have higher ionization energy than lithium?

magnesium has a higher ionization energy because it outermost sub-energy level is full. they have the same ionization energy because they have the same number of valence electrons.

Why does magnesium have a smaller atomic radius than strontium?

This is because any electrons in inner shells shield the electrons in outer shells from the nuclear charge. In fact shielding is NOT perfect and strontium has a slightly higher effective nuclear charge than magnesium.

Why does strontium ionize faster than magnesium?

The valence electrons are closer to the nucleus of the atom in terms of orbitals so there is less shielding effect in magnesium than strontium. The valence electrons in strontium are in higher orbitals than the ones in magnesium so they require less energy to reach ionization. A way you can remember it is by using this trend.

Why does magnesium have a higher ionisation energy than sodium?

The more stable electronic configuration has a greater ionisation energy. Sodium’s outer electronic configuration is 3s¹ while for magnesium it is 3s². As magnesium has a completely filled s orbital, it’s ionisation energy is greater than that of sodium.

Which element has the lowest ionization energy?

From this trend, Cesium is said to have the lowest ionization energy and Fluorine is said to have the highest ionization energy (with the exception of Helium and Neon). Which electron requires the most ionization energy?

Why does Radium have a lower first ionization energy than barium?

The general trend is that the value of the first ionization energy decreases down a family in the Periodic Table (i.e., metallic activity increases down a family). Therefore, one would expect that radium would have a lower first ionization energy than barium has.