Answer:
V
Explanation:
Firstly let’s list the names of the atoms
1. Sodium
2. Magnesium
3. Aluminum
4. Oxygen
5.Chlorine
Generally, anions have greater electron affinity than cations. Hence, they have more positive values for this electron affinity. This means that the higher the electron affinity, the greater its positive value
Electron affinity increases across a period. Thus, it is expected that chlorine has the highest value
Answer:
Darmstadtium
Explanation:
An element with the electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁶7s²5f¹⁴6d⁸ has 110 electrons in its electron shells.
Since the element is a neutral atom, this number is also equal to its atomic number. Therefore, its atomic number is 110.
The element in the period table that has an atomic number of 110 is Darmstadtium, a d-block element, thus a transittion metal. It also belong to period 7 in the Periodic table of elements.
<u>Answer:</u>
<em>An atom accepts electrons and becomes an anion.</em>
<em></em>
<u>Explanation:</u>
Atomic number = number of electrons = number of protons.
Atomic number of sodium is 11
So the atom contains 11 protons and 11 electrons
To find the number of neutrons we make use of the formula
Mass number - atomic number = number of neutrons
From the periodic table, we know mass number of sodium is 23
So number of neutron = 23 - 11 = 12.
When a sodium atom loses an electron it will have 11 positive protons and 10 negative electrons. Since 1 positive charge is more, Na becomes 
.
Positively charged ion is called as cation
Chlorine's atomic number is 17 so it has 17 protons and 17 electrons.
When it gains an electrons, it will have 17 positive protons and 18 negative electrons. Since 1 negative charge is more, Cl becomes 
.
Negatively charged ion is called as anion.
Considering that CCL3F gas behave like an ideal gas then we can use the Ideal Gas Law
<span>PV = nRT, however is an approximation and not the only way to resolve this problem with the given data..So,at the end of the solution I am posting some sources for further understanding and a expanded point of view. </span>
<span>Data: P= 856torr, T = 300K, V= 1.1L, R = 62.36 L Torr / KMol </span>
<span>Solving and substituting in the Gas equation for n = PV / RT = (856)(1.1L) /( 62.36)(300) = 0.05 Mol. This RESULT is of any gas. To tie it up to our gas we need to look for its molecular weight:MW of CCL3F = 137.7 gm/mol. </span>
<span>Then : 0.05x 137.5 = 6.88gm of vapor </span>
<span>If we sustract the vapor weight from the TOTAL weight of liquid we have: 11.5gm - 6.88gm = 4.62 gm of liquid.d</span>
<h3>
Answer:</h3>
1.926 g of NaOH
<h3>
Explanation:</h3>
Concept tested: Mole and Avogadro's number
- We need to know that , 1 mole of a compound contains number of molecules equivalent to the Avogadro's number.
- Th Avogadro's number is 6.022 × 10^23
Therefore;
- 1 mole of a compound = 6.022 × 10^23 molecules
In this case; Our compound is NaOH
Therefore;
1 mole of NaOH contains 6.022 × 10^23 molecules
But; Molar mass of NaOH is 40.0 g/mol
Therefore;
- 40.0 g of NaOH contains 6.022 × 10^23 molecules
With this we can calculate the mass of 2.90 × 10^22 molecules
- Mass of a compound = (number of molecules ÷ Avogadro's constant) × molar mass
Therefore;
Mass of NaOH =(2.90 × 10^22 molecules ÷ 6.022 × 10^23 molecules)40g
= 1.9263 g
= 1.926 g NaOH
Thus, the mass of NaOH is 1.926 g
