In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions .

Explanation:

Yes ur well come

3 0

4 years ago

Elements donate 2 electron to produce a cation with a 2+ charge

hammer [34]

Answer: alkaline earth metals (group-IIA)

Explanation:

The element which donates the electron is known as electropositive element and forms a positively charged ion called as cation. The element which accepts the electrons is known as electronegative element and forms a negatively charged ion called as anion.

Alkaline earth metals donate 2 valence electrons to acquire noble gas configuration.

For example: Berrylium is the first alkaline earth metal with atomic number of 4 and thus has 4 electrons

Electronic configuration of berrylium:

$[Be]:4:1s^22s^2$

Berrylium atom will loose two electrons to gain noble gas configuration and form berrylium cation with +2 charge.

$[Be^{2+}]:2:1s^2$

Thus Elements donate 2 electron to produce a cation with a 2+ charge are alkaline earth metals.

5 0

3 years ago

There's a atom with atomic number of 9. it has 8 neutrons.what is the number of protons

Sidana [21]

Explanation:

proton normally = atomic number

protons = 9

3 0

3 years ago

How did Dalton describe the relationship between atoms and elements? Atoms are made up of combinations of elements. An element i

Leni [432]

Answer:

when your fingers touch something your not touch it cause of the atom

but your hand touch a another person the atoms in each body reacts

8 0

3 years ago