<span>There are 118 unique substances (elements) arranged on an amazing chart that reveals their hidden secrets to anyone who knows how to read it.
</span>The first chemical element is hydrogen (atomic number is 1) and the last is oganesson (atomic number is 118).
<span>Elements are scheduled in periodic table</span><span>, ordered by their </span>atomic number.
Explanation:
Bond forming:
Given species:
Na - Sodium Cl - Chlorine
Na has a valence electron
Cl has 7 valence electron
To form a bond of this nature, there must be a transfer of electrons.
Here, the bond is between a metal and non-metal
The metal is sodium and the non-metal is chlorine;
Na → Na⁺ + e⁻ loss of 1 electron
2,8,1 2,8
isoelectronic with Neon
Cl + e → Cl⁻ gain of one electron
isoelectronic with Argon
Na⁺ + Cl⁻ → Na⁺.Cl⁻
This bond type is an ionic bond
Answer:
![a_x=4.944m/s^2](https://tex.z-dn.net/?f=a_x%3D4.944m%2Fs%5E2)
Explanation:
Hello,
Based on the acting force that is applied horizontally, one can propose the following equation based on Newton's laws:
![F=ma](https://tex.z-dn.net/?f=F%3Dma)
Nevertheless, since we've got a angled force, it becomes:
![F=macos\theta](https://tex.z-dn.net/?f=F%3Dmacos%5Ctheta)
In this case,
accounts for the formed angle, so the horizontal acceleration turns out into:
![a_x=\frac{F}{mcos\theta}=\frac{100kg*\frac{m}{s^2} }{25kgcos(36^0)}=4.944m/s^2](https://tex.z-dn.net/?f=a_x%3D%5Cfrac%7BF%7D%7Bmcos%5Ctheta%7D%3D%5Cfrac%7B100kg%2A%5Cfrac%7Bm%7D%7Bs%5E2%7D%20%7D%7B25kgcos%2836%5E0%29%7D%3D4.944m%2Fs%5E2)
Best regads.
It's D I think. when experimental results do not support the original hypothesis