Answer:
I believe it's one dot in an electron dot diagram (or rubidium)
Explanation:
I hope this helps
He discovered what became known as Dobereiner's triads. For example he noticed that the average of the atomic mass of lithium and potassium was close to the atomic mass of sodium and they had similar properties.
The third choice is the correct one.
Answer:
<h3>I THINK ITS B.) NOBLR GASSES</h3>
Explanation:
I HOPE IT HELPS ;)
Geologists study rocks and help to locate useful minerals. Earth scientists mainly work “in the field”—climbing mountains, exploring the seabed, crawling through caves, or wading in swamps.
The electrons in an atom that are in orbits away from the nucleus are called valence electrons. Nitrogen: 5, Silicon: 4, Oxygen: 6, Magnesium: 2.
<h3>What exactly is a positive electron and why is it significant?</h3>
Valence electrons are the electrons that reside in an atom's outermost shell. The role of valence electrons in controlling an atom's reaction makes them crucial. By writing an octet, you'll be enabled see how many protons fill the highest amount of energy.
<h3>What is valence defined simply?</h3>
In chemistry, valence, sometimes called valency, is a characteristic of an element who establishes how many other atoms of the element each atom can interact with. The phrase, which was first used in 1868, is used to represent both the broad capability of pairing of an element and its numerical value.
To know more about valence electrons visit:
brainly.com/question/13993867
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