Please answer all questions and explain, except 1, 7, and 8, I will award brainliest. PLEASE HELP ASAP

2. Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons.

3. Electrons

4. Titanium- Ti

5. a. e and p = 35, n = 45

b. e and p = 46, n = 60

c. e and p = 55, n = 78

6. Barium - atomic number = 56 and mass = 138

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i believe this is ur answer-138

Explanation:

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ok whats the question if not i cannot you i need question and need a thing to answer