Answer:
thire is no grup 13 in modern periodic table
Answer:
An enzyme speeds up a chemical reaction in the cell, but it can only be used once.
Explanation:
Answer: yes you should
Explanation: Taking a gap year before college will allow you to perform better when you do attend college. This is due to many reasons, but the main factor is that having a year of time off between the end of high school and the beginning of college will cause you to take your education more seriously.
I'm pretty sure the answer is either A or D
The number of protons in an element is the atomic number of the element, and it is not affected by the charge on the element. Hence, the species which has similar Number of proton is Fe²⁺
To know the species which the same number of protons as Fe³⁺, we need to obtain the <em>atomic number of the elements on the periodic table</em> :
- Fe³⁺, Atomic number = 26; Number of protons = 26
- Mn³⁺, Atomic number = 25; Number of protons = 25
- Co²⁺, Atomic number = 27; Number of protons = 27
- Fe²⁺, Atomic number = 26; Number of protons = 26
- Ni, Atomic number = 28; Number of protons = 28
Therefore, only Fe²⁺ has the same number of protons as Fe³⁺
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