3 years ago

5 Which two elements are combined in magnesium oxide?

1 answer:

6 0

Answer:

magnesium and oxygen

Explanation:

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zvonat [6]

Answer:

atomic number =17

mass number = 17+18= 35

3 0

3 years ago

zheka24 [161]

Answer:

it will be classical as gas

3 0

2 years ago

sammy [17]

Answer:

MgBr2 < MgCl2 < NaBr < NaCl

Explanation:

In order to determinate ionic character, we have to subtract the electronegativity from the elements involved. This is known as Pauling rule.

MgBr2 > ΔΕΝ = 1.8

NaCl > ΔΕΝ = 2.3

MgCl2 > ΔΕΝ = 2

NaBr > ΔΕΝ = 2.1

6 0

3 years ago

emmasim [6.3K]

When elements transfer electrons from a cation and an anion it called ionic bond.

6 0

3 years ago

KATRIN_1 [288]

Explanation:

Beryllium is a group 2 element and its atomic number is 4. Electronic configuration of beryllium is $1s^{2}2s^{2}$ .

Since, a beryllium contains two valence electrons so, in order to attain stability it will readily lose its 2 valence electrons.

Therefore, a beryllium atom upon losing two valence electrons will acquire a +2 charge.

Thus, we can conclude that the net ion charge of Beryllium is +2.

7 0

3 years ago