The answer is the first one A
Answer:
Moving from left to right across a period, the atomic radius decreases. The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons.
Answer:
they are in group II and they have two electrons in their outermost energy levels ( valency)...is this helpful?
The compound formed when nitrogen combines with hydrogen is ammonia.
A chemical reaction is said to have occurred when two elements combine according to a given reaction equation.
In this case, Sanju wants to combine nitrogen and hydrogen. The reaction takes place according to the equation;
N2 + 3H2 ----> 2NH3
The product formed in the reaction is ammonia.
Learn more: brainly.com/question/13440572
Answer:
oxygen
Explanation:any reaction with burning involves mixing oxygen
this is correct
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