Answer:
See below.
Step-by-step explanation:
<em>Method 1:
</em>
You know that oxygen is a <em>non-metal.
</em>
If the compound is ionic, the oxygen must be combined with a <em>metal</em>.
The Mg must be a metal.
<em>Method 2:</em>
In the formulas of ionic compounds, the positive ion (usually a metal) is written first.
We, know molecular mass of water is, M = 16 g/mol .
Given mass of water, m = 18 g.
We know, number of moles is given by :
Now, 1 mole of any compound contains 6.022 × 10²³ molecules.
So, number of moles in 1.125 moles of water is 1.125 × 6.022 × 10²³ =
6.77 × 10²³ molecules.
Hence, this is the required solution.
Answer:
Proton = 119
Electron = 119
Neutron = 183
Explanation:
Mass number (A) = 302
Atomic number (Z) = 119
Proton = atomic number = 119
Since there is no charge on the element, it means the element is neutral.
Therefore,
Electron = proton = 119
Mass number = proton + Neutron
Neutron = Mass number — proton
Neutron = 302 — 119
Neutron = 183
Answer:
when they form a bond, Atom B has higher electronegativity than atom A.
Explanation:
Electronegativity is the tendency of an atom in a bond pair to attract the shared pair of electron towards itself.
Covalent bond is the bond which is formed with the sharing of the electrons between the two atoms which are taking part in the bond. It is generally formed between the atoms with similar electronegativity values.
It is the bond which is generally occurs within non metals as they share electrons to complete their octet.
The difference in the electronegativity values of the atoms involving in a covalent bond must not exceed the value of 1.7 .
The electrons in case of atom B are close to the nucleus and in case of atom N are far from the nucleus. Thus, when they form a bond, Atom B has higher electronegativity than atom A.
Carbon? Their is not enough insight for what the question means.... If you mean connecting two types of element together then sure Nitrogen or Carbon but not sure what else is added within the question