Chemistry 25-09-24

Chemistry 25-09-24

University

20 Qs

quiz-placeholder

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Chemistry 25-09-24

Chemistry 25-09-24

Assessment

Quiz

Science

University

Practice Problem

Hard

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which molecule contains six bonding electrons?

C2H4

H2S

NCl3

SF6

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

6.93

6.90

6.50

6.07

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which property of an atom does not affect its ionisation energy?

The atomic radius

The number of electron shells

The number of neutrons

The number of protons

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the second ionisation energy of sodium larger than the second ionisation energy of magnesium

The attraction between the nucleus and the outer electron is greater in Na+ than in Mg+

The nuclear charge of Na+ is greater than Mg+

The outer electron of Na+ is more shielded than the outer electron of Mg+

The outer electron of Na is in the same orbital as the as the outer electron of Mg

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A

B

C

D

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

B

A

C

D

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula represents the empirical formula of a compound

C2H4O

C2H4O2

C6H12

H2O2

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