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Group 2 Metals and Electronic Configurations Quiz

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Group 2 Metals and Electronic Configurations Quiz

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Questions and Answers

What is the trend in first and second ionisation energies down the group?

Remains constant due to the neutral charge of the nucleus

Increases due to a larger atomic radius

Decreases because of stronger attraction between nucleus and valence electron

Decreases as atomic radius increases and shielding increases (correct)

Why does reactivity increase down Group 2?

Increase in shielding and atomic radius (correct)

Increase in nuclear charge

Decrease in atomic radius

Decrease in nuclear charge

What is the general equation for a Group 2 metal reacting with water?

M(s) + H2O(l) à M(OH)2(s) + H(g) (correct)

M(s) + H2O(l) à MOH2(s) + H2(g)

M(s) + HO(l) à MO(s) + H2(g)

M(s) + H2O(l) à MOH(s) + H(g)

Which species is oxidised when a Group 2 metal reacts with water?

M Signup and view all the answers

What are the properties of titanium that make it useful?

Strong, low density, high melting point Signup and view all the answers

Why can't carbon be used to extract titanium from the Earth's crust?

Titanium carbide makes the metal brittle Signup and view all the answers

What defines a metal according to the provided text?

A regular lattice consisting of positively charged ions and delocalised electrons Signup and view all the answers

What is the electronic configuration of Be?

$1s^22s^2$ Signup and view all the answers

Explain the trend in atomic radius down Group 2.

The atomic radius increases due to weaker attraction between outer electrons and the nucleus Signup and view all the answers

Which element in Group 2 has the electronic configuration $1s^22s^22p^63s^23p^64s^2$?

Calcium (Ca) Signup and view all the answers

What explains the trend in melting points down Group 2?

Attraction between ions and electrons weakens Signup and view all the answers

Which Group 2 metal is an exception when it comes to the trend in melting points down the group?

Magnesium (Mg) Signup and view all the answers