Which property is true for metals?

a. localized electrons
b. high electronegativity
c. low ionization energies
d. tightly held valence electrons

Option (c) is the correct answer.

Explanation:

When a loosely bound electron is removed by providing a minimum amount of energy then this energy is called ionization energy.

When the size of atom is large, then the outermost electrons are far away from the nucleus that is they can be easily removed. Therefore, the ionization energy will be less.

As the size of atom decreases, the electrons are held more close to the nucleus as a result more energy is required to remove an outermost electron. Therefore, the ionization energy increases.

It is known that the size of atom decreases on moving from left to right in a period and number of metals decreases along the period from left to right as a result metals have low ionization energy.

The correct option for above statement is:

C. low ionization energies

Explanation:

All metals have a shiny look (at least once freshly polished). They are sensible conductors of warmth and electricity; kind alloys with different metals; and have a minimum of one basic compound.Metals area unit typically malleable-as well as liquefied

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.