<h3>
Answer:</h3>
2.21 × 10^-18 Joules
<h3>
Explanation:</h3>
<u>We are given;</u>
- Wavelength of a photon as 9 × 10^-8 m
We are required to calculate the energy of the wave.
- Energy of a photon is given by the formula;
Thus, E = hc/λ
where, h is the plank's constant , 6.626 × 10^-34 J-s , c is the speed of light, 2.998 × 10^8 m/s, and λ is the wavelength.
Therefore;
E = (6.626 × 10^-34 J-s × 2.998 × 10^8 m/s) ÷ 9 × 10^-8 m
= 2.21 × 10^-18 Joules
Thus, the energy of the photon is 2.21 × 10^-18 Joules
Equation is as follow,
<span> 4 Na (s) + O</span>₂ <span>(g) → 2Na</span>₂<span>O (s)
According to equation,
91.92 g (4 moles) of Na produces = 123.92 g (2 moles) of Na</span>₂O
So,
17.4 g of Na will produce = X g of Na₂O
Solving for X,
X = (17.4 g × 123.92 g) ÷ 91.92 g
X = 23.45 g of Na₂O
Explanation:
The formation of an ionic bond involves the octet rule because every atoms wants to have a stable configuration.
In ionic bond, a metal will lose its electrons to become isoelectronic with the nearest noble gas. Therefore, the octet rule is obeyed
The non-metal gains the electrons and becomes a stable octet
The electrostatic attraction between the opposite charges results in the bond
What are the elements so i can help?????
