Which metal is most likely to form more than one kind of positively?

Which metal is most likely to form more than one kind of positively?

Nickel (Ni)

What best describes the state of non-metals when they are at room temperature?

At room temperature, hydrogen, helium, fluorine, chlorine etc all exist as gases. Whereas some non-metals exist as solid like carbon, phosphorous, sulfur, selenium, iodine etc. But bromine exist as a liquid. Hence, we can conclude that the statement Most nonmetals are gaseous, but some are liquid or solid, is true.

Which best explains why rubidium is more reactive than strontium?

Rubidium (Rb) is more reactive than strontium (Sr) because strontium atoms must lose more electrons. Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group.

Why is magnesium is less reactive than sodium when placed in water?

Sodium easily lose electrons than magnesium and get oxidized to easily. Sodium with atomic number of 11 has electronic configuration of 2,8 ,1. thus it has to lose one electron to attain noble gas configuration whereas Magnesium with atomic number of 12 has electronic configuration of 2,8, 2.

Is Potassium or strontium more reactive?

Answer: Potassium (K) is more reactive because it is further down in Group 1 than sodium (Na). Answer: Rubidium (Rb) is more reactive because it is further to the left than strontium (Sr). Which is less reactive: lithium (Li) or beryllium (Be)?

Which is more reactive S or SE?

Which of these is more reactive? The halogen family is group 7A; so Cl and Br are members of the halogen family. Se has more in common with S because they are in the same group. This means they have the same number of valence electrons and will react in a similar way.

Is francium reactive with water?

Francium is an alkali metal and its chemical properties strongly resembles those of cesium. It is highly reactive and like alkali metals it reacts with water.