1. A monatomic ion with a charge of -2 has an electronic configuration of 1s 2 2

ID: 903420 • Letter: 1

Question

1. A monatomic ion with a charge of -2 has an electronic configuration of 1s22s22p63s23p6.

This ion is a(n) _______cation? anion?

What is the chemical symbol of the noble gas this ion is isoelectronic with?

What is the formula of the ion?

2. A monatomic ion with a charge of +2 has an electronic configuration of 1s22s22p63s23p6.

This ion is a(n) _______cation? anion?

What is the chemical symbol of the noble gas this ion is isoelectronic with?

What is the formula of the ion?

3. A monatomic ion with a charge of +1 has an electronic configuration of 1s22s22p63s23p6

This ion is a(n) _______cation? anion?

What is the chemical symbol of the noble gas this ion is isoelectronic with?

What is the formula of the ion?

1. A monatomic ion with a charge of -2 has an electronic configuration of 1s22s22p63s23p6.

This ion is a(n) _______cation? anion?

This has 18 electrons, therefore find the noble gas contianing 18 electrons --> Argon

since substance has -2 charge, take out 2 electrons, you get 16 electrons... this must be Z = 16, OXYGEN

What is the chemical symbol of the noble gas this ion is isoelectronic with?
As stated before, this is Argon (noble gas) configuration

What is the formula of the ion?

it must be Oxygen with -2 charge, therefore O-2

2. A monatomic ion with a charge of +2 has an electronic configuration of 1s22s22p63s23p6.

This ion is a(n) _______cation? anion?

This is still ARgon, but now +2 charge... therefore must have 18+2 electrons = 20

Z = 20, which is Calcium or Ca+2

What is the chemical symbol of the noble gas this ion is isoelectronic with?

Argon --> Ar

What is the formula of the ion?

Calcium ion is Ca+2

3. A monatomic ion with a charge of +1 has an electronic configuration of 1s22s22p63s23p6

This ion is a(n) _______cation? anion?

This must be Z = 18 +1 = 19

which is potassium, or K

What is the chemical symbol of the noble gas this ion is isoelectronic with?

This is still argon, Ar

What is the formula of the ion?

Potassium charged +1, therefore, K+

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