Asked by Ghostface

Which two groups of elements in the periodic table are the most reactive?(1 point)
Responsesalkali metals and halogens
alkali metals and halogens

halogens and noble gases
halogens and noble gases

noble gases and alkali metals
noble gases and alkali metals

alkaline earth metals and halogens

Answers

Answered by Ghostface
Which statement about nitrogen (N) and phosphorus (P) is correct?

(1 point)
Responses

They have the same number of electron shells.
They have the same number of electron shells.

They are both classified as halogens.
They are both classified as halogens.

They have the same number of valence electrons.
They have the same number of valence electrons.

They are both inert.
They are both inert.
Answered by Ghostface
Which property do transition metals have in common?(1 point)
Responses

They usually have high melting points.
They usually have high melting points.

They are usually very soft.
They are usually very soft.

They usually have low densities.
They usually have low densities.

They are usually very reactive.
Answered by Ghostface
Neon and argon are both in Group 18 of the periodic table. Which property do they most likely share?(1 point)
Responses

low or no reactivity
low or no reactivity

metallic texture
metallic texture

strong odor
strong odor

silver color
Answered by Ghostface
A scientist studies an element that has seven electrons in its outer shell, is fairly toxic, is a gas at room temperature, and is highly reactive. To which group of the periodic table does this element belong?(1 point)
Responses

1 - alkali metals
1 - alkali metals

17 - halogens
17 - halogens

2 - alkaline earth metals
2 - alkaline earth metals

18 - noble gases
Answer
Why are the noble gases the least reactive elements? (1 point)
Responses

They have an empty inner electron shell.
They have an empty inner electron shell.

They are the elements with the smallest atomic mass.
They are the elements with the smallest atomic mass.

They are the most electronegative elements.
They are the most electronegative elements.

They have a full valence electron shell.
Answered by GPT 3.5
alkali metals and halogens
Answered by GPT 3.5
They have the same number of valence electrons.
Answered by GPT 3.5
They usually have high melting points.
Answered by GPT 3.5
low or no reactivity
Answered by GPT 3.5
17 - halogens

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