[Part 2]- C2- the periodic table 🧪 Flashcards

1
Q

What is a specific feature about group 7 elements?

A
  • all group 7 elements, have seven electrons in their outer shell.
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2
Q

Fill in the gaps: Group seven elements form _________, with two atoms which are joined by a ________ bond.

A
  • Group seven elements form molecules, with two atoms which are joined by a covalent bond.
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3
Q

What are group seven called?

A
  • group seven are called the halogens.
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4
Q

What happens to the melting and boiling points of group seven?

A
  • the melting and boiling points of group seven increases as you move down the group.
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5
Q

What happens to the relative molecular mass of group 7?

A
  • as you move down group seven, the relative molecular mass increases. [the molecules get bigger]
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5
Q

What happens to the relative molecular mass of group 7?

A
  • as you move down group seven, the relative molecular mass increases.
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6
Q

Fill in the gaps: The halogens are all ___ _______.

A
  • The halogens are all non-metals.
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7
Q

What do group seven elements form, when they react with other non-metal atoms ?

Hint: compound

A
  • group seven elements form covalent compounds, when they react with other non-metal atoms.
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8
Q

What happens when a group seven elements reacts with a metal?

A
  • when group seven elements react with a metal, the group seven element: gains one electron and forms a negatively charged -1 ion.
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9
Q

What happens to the reactivity of group seven ?

Hint: extra electron

A
  • as you move down group seven, the reactivity of the halogens decreases
  • This is because its harder to gain an extra electron, as there is a greater distance from the nucleus aswell as shielding by internal electrons.
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10
Q

Fill in the gaps: A more _______ halogen, can _______ a less reactive halogen from an _______ solution of its salt.

A

Fill in the gaps: A more reactive halogen, can displace a less reactive halogen from an aqueous solution of its salt.

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11
Q

Referring to relative atomic mass, what are the trends of group seven?

A
  • group seven [the halogens] have a higher relative atomic mass.
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